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Overcoming Speech Impediment: Symptoms to Treatment

There are many causes and solutions for impaired speech

• Types and Symptoms
• Speech Therapy
• Building Confidence

Speech impediments are conditions that can cause a variety of symptoms, such as an inability to understand language or speak with a stable sense of tone, speed, or fluidity. There are many different types of speech impediments, and they can begin during childhood or develop during adulthood.

Common causes include physical trauma, neurological disorders, or anxiety. If you or your child is experiencing signs of a speech impediment, you need to know that these conditions can be diagnosed and treated with professional speech therapy.

This article will discuss what you can do if you are concerned about a speech impediment and what you can expect during your diagnostic process and therapy.

FG Trade / Getty Images

Types and Symptoms of Speech Impediment

People can have speech problems due to developmental conditions that begin to show symptoms during early childhood or as a result of conditions that may occur during adulthood. 

The main classifications of speech impairment are aphasia (difficulty understanding or producing the correct words or phrases) or dysarthria (difficulty enunciating words).

Often, speech problems can be part of neurological or neurodevelopmental disorders that also cause other symptoms, such as multiple sclerosis (MS) or autism spectrum disorder .

There are several different symptoms of speech impediments, and you may experience one or more.

Can Symptoms Worsen?

Most speech disorders cause persistent symptoms and can temporarily get worse when you are tired, anxious, or sick.

Symptoms of dysarthria can include:

• Slurred speech
• Slow speech
• Choppy speech
• Hesitant speech
• Inability to control the volume of your speech
• Shaking or tremulous speech pattern
• Inability to pronounce certain sounds

Symptoms of aphasia may involve:

• Speech apraxia (difficulty coordinating speech)
• Difficulty understanding the meaning of what other people are saying
• Inability to use the correct words
• Inability to repeat words or phases
• Speech that has an irregular rhythm

You can have one or more of these speech patterns as part of your speech impediment, and their combination and frequency will help determine the type and cause of your speech problem.

Causes of Speech Impediment

The conditions that cause speech impediments can include developmental problems that are present from birth, neurological diseases such as Parkinson’s disease , or sudden neurological events, such as a stroke .

Some people can also experience temporary speech impairment due to anxiety, intoxication, medication side effects, postictal state (the time immediately after a seizure), or a change of consciousness.

Speech Impairment in Children

Children can have speech disorders associated with neurodevelopmental problems, which can interfere with speech development. Some childhood neurological or neurodevelopmental disorders may cause a regression (backsliding) of speech skills.

Common causes of childhood speech impediments include:

• Autism spectrum disorder : A neurodevelopmental disorder that affects social and interactive development
• Cerebral palsy :  A congenital (from birth) disorder that affects learning and control of physical movement
• Hearing loss : Can affect the way children hear and imitate speech
• Rett syndrome : A genetic neurodevelopmental condition that causes regression of physical and social skills beginning during the early school-age years.
• Adrenoleukodystrophy : A genetic disorder that causes a decline in motor and cognitive skills beginning during early childhood
• Childhood metabolic disorders : A group of conditions that affects the way children break down nutrients, often resulting in toxic damage to organs
• Brain tumor : A growth that may damage areas of the brain, including those that control speech or language
• Encephalitis : Brain inflammation or infection that may affect the way regions in the brain function
• Hydrocephalus : Excess fluid within the skull, which may develop after brain surgery and can cause brain damage

Do Childhood Speech Disorders Persist?

Speech disorders during childhood can have persistent effects throughout life. Therapy can often help improve speech skills.

Speech Impairment in Adulthood

Adult speech disorders develop due to conditions that damage the speech areas of the brain.

Common causes of adult speech impairment include:

• Head trauma 
• Nerve injury
• Throat tumor
• Stroke 
• Parkinson’s disease 
• Essential tremor
• Brain tumor
• Brain infection

Additionally, people may develop changes in speech with advancing age, even without a specific neurological cause. This can happen due to presbyphonia , which is a change in the volume and control of speech due to declining hormone levels and reduced elasticity and movement of the vocal cords.

Do Speech Disorders Resolve on Their Own?

Children and adults who have persistent speech disorders are unlikely to experience spontaneous improvement without therapy and should seek professional attention.

Steps to Treating Speech Impediment 

If you or your child has a speech impediment, your healthcare providers will work to diagnose the type of speech impediment as well as the underlying condition that caused it. Defining the cause and type of speech impediment will help determine your prognosis and treatment plan.

Sometimes the cause is known before symptoms begin, as is the case with trauma or MS. Impaired speech may first be a symptom of a condition, such as a stroke that causes aphasia as the primary symptom.

The diagnosis will include a comprehensive medical history, physical examination, and a thorough evaluation of speech and language. Diagnostic testing is directed by the medical history and clinical evaluation.

Diagnostic testing may include:

• Brain imaging , such as brain computerized tomography (CT) or magnetic residence imaging (MRI), if there’s concern about a disease process in the brain
• Swallowing evaluation if there’s concern about dysfunction of the muscles in the throat
• Electromyography (EMG) and nerve conduction studies (aka nerve conduction velocity, or NCV) if there’s concern about nerve and muscle damage
• Blood tests, which can help in diagnosing inflammatory disorders or infections

Your diagnostic tests will help pinpoint the cause of your speech problem. Your treatment will include specific therapy to help improve your speech, as well as medication or other interventions to treat the underlying disorder.

For example, if you are diagnosed with MS, you would likely receive disease-modifying therapy to help prevent MS progression. And if you are diagnosed with a brain tumor, you may need surgery, chemotherapy, or radiation to treat the tumor.

Therapy to Address Speech Impediment

Therapy for speech impairment is interactive and directed by a specialist who is experienced in treating speech problems . Sometimes, children receive speech therapy as part of a specialized learning program at school.

The duration and frequency of your speech therapy program depend on the underlying cause of your impediment, your improvement, and approval from your health insurance.

If you or your child has a serious speech problem, you may qualify for speech therapy. Working with your therapist can help you build confidence, particularly as you begin to see improvement.

Exercises during speech therapy may include:

• Pronouncing individual sounds, such as la la la or da da da
• Practicing pronunciation of words that you have trouble pronouncing
• Adjusting the rate or volume of your speech
• Mouth exercises
• Practicing language skills by naming objects or repeating what the therapist is saying

These therapies are meant to help achieve more fluent and understandable speech as well as an increased comfort level with speech and language.

Building Confidence With Speech Problems 

Some types of speech impairment might not qualify for therapy. If you have speech difficulties due to anxiety or a social phobia or if you don’t have access to therapy, you might benefit from activities that can help you practice your speech. 

You might consider one or more of the following for you or your child:

• Joining a local theater group
• Volunteering in a school or community activity that involves interaction with the public
• Signing up for a class that requires a significant amount of class participation
• Joining a support group for people who have problems with speech

Activities that you do on your own to improve your confidence with speaking can be most beneficial when you are in a non-judgmental and safe space.

Many different types of speech problems can affect children and adults. Some of these are congenital (present from birth), while others are acquired due to health conditions, medication side effects, substances, or mood and anxiety disorders. Because there are so many different types of speech problems, seeking a medical diagnosis so you can get the right therapy for your specific disorder is crucial.

Centers for Disease Control and Prevention. Language and speech disorders in children .

Han C, Tang J, Tang B, et al. The effectiveness and safety of noninvasive brain stimulation technology combined with speech training on aphasia after stroke: a systematic review and meta-analysis . Medicine (Baltimore). 2024;103(2):e36880. doi:10.1097/MD.0000000000036880

National Institute on Deafness and Other Communication Disorders. Quick statistics about voice, speech, language .

Mackey J, McCulloch H, Scheiner G, et al. Speech pathologists' perspectives on the use of augmentative and alternative communication devices with people with acquired brain injury and reflections from lived experience . Brain Impair. 2023;24(2):168-184. doi:10.1017/BrImp.2023.9

Allison KM, Doherty KM. Relation of speech-language profile and communication modality to participation of children with cerebral palsy . Am J Speech Lang Pathol . 2024:1-11. doi:10.1044/2023_AJSLP-23-00267

Saccente-Kennedy B, Gillies F, Desjardins M, et al. A systematic review of speech-language pathology interventions for presbyphonia using the rehabilitation treatment specification system . J Voice. 2024:S0892-1997(23)00396-X. doi:10.1016/j.jvoice.2023.12.010

By Heidi Moawad, MD Dr. Moawad is a neurologist and expert in brain health. She regularly writes and edits health content for medical books and publications.

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Home / Blog

Speech Impediment Guide: Definition, Causes, and Resources

December 8, 2020 

Tables of Contents

What Is a Speech Impediment?

Types of speech disorders, speech impediment causes, how to fix a speech impediment, making a difference in speech disorders.

Communication is a cornerstone of human relationships. When an individual struggles to verbalize information, thoughts, and feelings, it can cause major barriers in personal, learning, and business interactions.

Speech impediments, or speech disorders, can lead to feelings of insecurity and frustration. They can also cause worry for family members and friends who don’t know how to help their loved ones express themselves.

Fortunately, there are a number of ways that speech disorders can be treated, and in many cases, cured. Health professionals in fields including speech-language pathology and audiology can work with patients to overcome communication disorders, and individuals and families can learn techniques to help.

Commonly referred to as a speech disorder, a speech impediment is a condition that impacts an individual’s ability to speak fluently, correctly, or with clear resonance or tone. Individuals with speech disorders have problems creating understandable sounds or forming words, leading to communication difficulties.

Some 7.7% of U.S. children — or 1 in 12 youths between the ages of 3 and 17 — have speech, voice, language, or swallowing disorders, according to the National Institute on Deafness and Other Communication Disorders (NIDCD). About 70 million people worldwide, including some 3 million Americans, experience stuttering difficulties, according to the Stuttering Foundation.

Common signs of a speech disorder

There are several symptoms and indicators that can point to a speech disorder.

• Unintelligible speech — A speech disorder may be present when others have difficulty understanding a person’s verbalizations.
• Omitted sounds — This symptom can include the omission of part of a word, such as saying “bo” instead of “boat,” and may include omission of consonants or syllables.
• Added sounds — This can involve adding extra sounds in a word, such as “buhlack” instead of “black,” or repeating sounds like “b-b-b-ball.”
• Substituted sounds — When sounds are substituted or distorted, such as saying “wabbit” instead of “rabbit,” it may indicate a speech disorder.
• Use of gestures — When individuals use gestures to communicate instead of words, a speech impediment may be the cause.
• Inappropriate pitch — This symptom is characterized by speaking with a strange pitch or volume.

In children, signs might also include a lack of babbling or making limited sounds. Symptoms may also include the incorrect use of specific sounds in words, according to the American Speech-Language-Hearing Association (ASHA). This may include the sounds p, m, b, w, and h among children aged 1-2, and k, f, g, d, n, and t for children aged 2-3.

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Categories of Speech Impediments

Speech impediments can range from speech sound disorders (articulation and phonological disorders) to voice disorders. Speech sound disorders may be organic — resulting from a motor or sensory cause — or may be functional with no known cause. Voice disorders deal with physical problems that limit speech. The main categories of speech impediments include the following:

Fluency disorders occur when a patient has trouble with speech timing or rhythms. This can lead to hesitations, repetitions, or prolonged sounds. Fluency disorders include stuttering (repetition of sounds) or   (rapid or irregular rate of speech).

Resonance disorders are related to voice quality that is impacted by the shape of the nose, throat, and/or mouth. Examples of resonance disorders include hyponasality and cul-de-sac resonance.

Articulation disorders occur when a patient has difficulty producing speech sounds. These disorders may stem from physical or anatomical limitations such as muscular, neuromuscular, or skeletal support. Examples of articulation speech impairments include sound omissions, substitutions, and distortions.

Phonological disorders result in the misuse of certain speech sounds to form words. Conditions include fronting, stopping, and the omission of final consonants.

Voice disorders are the result of problems in the larynx that harm the quality or use of an individual’s voice. This can impact pitch, resonance, and loudness.

Impact of Speech Disorders

Some speech disorders have little impact on socialization and daily activities, but other conditions can make some tasks difficult for individuals. Following are a few of the impacts of speech impediments.

• Poor communication — Children may be unable to participate in certain learning activities, such as answering questions or reading out loud, due to communication difficulties. Adults may avoid work or social activities such as giving speeches or attending parties.
• Mental health and confidence — Speech disorders may cause children or adults to feel different from peers, leading to a lack of self-confidence and, potentially, self-isolation.

Resources on Speech Disorders

The following resources may help those who are seeking more information about speech impediments.

Health Information : Information and statistics on common voice and speech disorders from the NIDCD

Speech Disorders : Information on childhood speech disorders from Cincinnati Children’s Hospital Medical Center

Speech, Language, and Swallowing : Resources about speech and language development from the ASHA

Children and adults can suffer from a variety of speech impairments that may have mild to severe impacts on their ability to communicate. The following 10 conditions are examples of specific types of speech disorders and voice disorders.

1. Stuttering

This condition is one of the most common speech disorders. Stuttering is the repetition of syllables or words, interruptions in speech, or prolonged use of a sound.

This organic speech disorder is a result of damage to the neural pathways that connect the brain to speech-producing muscles. This results in a person knowing what they want to say, but being unable to speak the words.

This consists of the lost ability to speak, understand, or write languages. It is common in stroke, brain tumor, or traumatic brain injury patients.

4. Dysarthria

This condition is an organic speech sound disorder that involves difficulty expressing certain noises. This may involve slurring, or poor pronunciation, and rhythm differences related to nerve or brain disorders.

The condition of lisping is the replacing of sounds in words, including “th” for “s.” Lisping is a functional speech impediment.

6. Hyponasality

This condition is a resonance disorder related to limited sound coming through the nose, causing a “stopped up” quality to speech.

7. Cul-de-sac resonance

This speech disorder is the result of blockage in the mouth, throat, or nose that results in quiet or muffled speech.

8. Orofacial myofunctional disorders

These conditions involve abnormal patterns of mouth and face movement. Conditions include tongue thrusting (fronting), where individuals push out their tongue while eating or talking.

9. Spasmodic Dysphonia

This condition is a voice disorder in which spasms in the vocal cords produce speech that is hoarse, strained, or jittery.

10. Other voice disorders

These conditions can include having a voice that sounds breathy, hoarse, or scratchy. Some disorders deal with vocal folds closing when they should open (paradoxical vocal fold movement) or the presence of polyps or nodules in the vocal folds.

Speech Disorders vs. Language Disorders

Speech disorders deal with difficulty in creating sounds due to articulation, fluency, phonology, and voice problems. These problems are typically related to physical, motor, sensory, neurological, or mental health issues.

Language disorders, on the other hand, occur when individuals have difficulty communicating the meaning of what they want to express. Common in children, these disorders may result in low vocabulary and difficulty saying complex sentences. Such a disorder may reflect difficulty in comprehending school lessons or adopting new words, or it may be related to a learning disability such as dyslexia. Language disorders can also involve receptive language difficulties, where individuals have trouble understanding the messages that others are trying to convey.  

Resources on Types of Speech Disorders

The following resources may provide additional information on the types of speech impediments.

Common Speech Disorders: A guide to the most common speech impediments from GreatSpeech

Speech impairment in adults: Descriptions of common adult speech issues from MedlinePlus

Stuttering Facts: Information on stuttering indications and causes from the Stuttering Foundation

Speech disorders may be caused by a variety of factors related to physical features, neurological ailments, or mental health conditions. In children, they may be related to developmental issues or unknown causes and may go away naturally over time.

Physical and neurological issues. Speech impediment causes related to physical characteristics may include:

• Brain damage
• Nervous system damage
• Respiratory system damage
• Hearing difficulties
• Cancerous or noncancerous growths
• Muscle and bone problems such as dental issues or cleft palate

Mental health issues. Some speech disorders are related to clinical conditions such as:

• Autism spectrum disorder
• Down syndrome or other genetic syndromes
• Cerebral palsy or other neurological disorders
• Multiple sclerosis

Some speech impairments may also have to do with family history, such as when parents or siblings have experienced language or speech difficulties. Other causes may include premature birth, pregnancy complications, or delivery difficulties. Voice overuse and chronic coughs can also cause speech issues.

The most common way that speech disorders are treated involves seeking professional help. If patients and families feel that symptoms warrant therapy, health professionals can help determine how to fix a speech impediment. Early treatment is best to curb speech disorders, but impairments can also be treated later in life.

Professionals in the speech therapy field include speech-language pathologists (SLPs) . These practitioners assess, diagnose, and treat communication disorders including speech, language, social, cognitive, and swallowing disorders in both adults and children. They may have an SLP assistant to help with diagnostic and therapy activities.

Speech-language pathologists may also share a practice with audiologists and audiology assistants. Audiologists help identify and treat hearing, balance, and other auditory disorders.

How Are Speech Disorders Diagnosed?

Typically, a pediatrician, social worker, teacher, or other concerned party will recognize the symptoms of a speech disorder in children. These individuals, who frequently deal with speech and language conditions and are more familiar with symptoms, will recommend that parents have their child evaluated. Adults who struggle with speech problems may seek direct guidance from a physician or speech evaluation specialist.

When evaluating a patient for a potential speech impediment, a physician will:

• Conduct hearing and vision tests
• Evaluate patient records
• Observe patient symptoms

A speech-language pathologist will conduct an initial screening that might include:

• An evaluation of speech sounds in words and sentences
• An evaluation of oral motor function
• An orofacial examination
• An assessment of language comprehension

The initial screening might result in no action if speech symptoms are determined to be developmentally appropriate. If a disorder is suspected, the initial screening might result in a referral for a comprehensive speech sound assessment, comprehensive language assessment, audiology evaluation, or other medical services.

Initial assessments and more in-depth screenings might occur in a private speech therapy practice, rehabilitation center, school, childcare program, or early intervention center. For older adults, skilled nursing centers and nursing homes may assess patients for speech, hearing, and language disorders.

How Are Speech Impediments Treated?

Once an evaluation determines precisely what type of speech sound disorder is present, patients can begin treatment. Speech-language pathologists use a combination of therapy, exercise, and assistive devices to treat speech disorders.

Speech therapy might focus on motor production (articulation) or linguistic (phonological or language-based) elements of speech, according to ASHA. There are various types of speech therapy available to patients.

Contextual Utilization  — This therapeutic approach teaches methods for producing sounds consistently in different syllable-based contexts, such as phonemic or phonetic contexts. These methods are helpful for patients who produce sounds inconsistently.

Phonological Contrast — This approach focuses on improving speech through emphasis of phonemic contrasts that serve to differentiate words. Examples might include minimal opposition words (pot vs. spot) or maximal oppositions (mall vs. call). These therapy methods can help patients who use phonological error patterns.

Distinctive Feature — In this category of therapy, SLPs focus on elements that are missing in speech, such as articulation or nasality. This helps patients who substitute sounds by teaching them to distinguish target sounds from substituted sounds.

Core Vocabulary — This therapeutic approach involves practicing whole words that are commonly used in a specific patient’s communications. It is effective for patients with inconsistent sound production.

Metaphon — In this type of therapy, patients are taught to identify phonological language structures. The technique focuses on contrasting sound elements, such as loud vs. quiet, and helps patients with unintelligible speech issues.

Oral-Motor — This approach uses non-speech exercises to supplement sound therapies. This helps patients gain oral-motor strength and control to improve articulation.

Other methods professionals may use to help fix speech impediments include relaxation, breathing, muscle strengthening, and voice exercises. They may also recommend assistive devices, which may include:

• Radio transmission systems
• Personal amplifiers
• Picture boards
• Touch screens
• Text displays
• Speech-generating devices
• Hearing aids
• Cochlear implants

Resources for Professionals on How to Fix a Speech Impediment

The following resources provide information for speech therapists and other health professionals.

Assistive Devices: Information on hearing and speech aids from the NIDCD

Information for Audiologists: Publications, news, and practice aids for audiologists from ASHA

Information for Speech-Language Pathologists: Publications, news, and practice aids for SLPs from ASHA

Speech Disorder Tips for Families

For parents who are concerned that their child might have a speech disorder — or who want to prevent the development of a disorder — there are a number of activities that can help. The following are tasks that parents can engage in on a regular basis to develop literacy and speech skills.

• Introducing new vocabulary words
• Reading picture and story books with various sounds and patterns
• Talking to children about objects and events
• Answering children’s questions during routine activities
• Encouraging drawing and scribbling
• Pointing to words while reading books
• Pointing out words and sentences in objects and signs

Parents can take the following steps to make sure that potential speech impediments are identified early on.

• Discussing concerns with physicians
• Asking for hearing, vision, and speech screenings from doctors
• Requesting special education assessments from school officials
• Requesting a referral to a speech-language pathologist, audiologist, or other specialist

When a child is engaged in speech therapy, speech-language pathologists will typically establish collaborative relationships with families, sharing information and encouraging parents to participate in therapy decisions and practices.

SLPs will work with patients and their families to set goals for therapy outcomes. In addition to therapy sessions, they may develop activities and exercises for families to work on at home. It is important that caregivers are encouraging and patient with children during therapy.  

Resources for Parents on How to Fix a Speech Impediment

The following resources provide additional information on treatment options for speech disorders.

Speech, Language, and Swallowing Disorders Groups: Listing of self-help groups from ASHA

ProFind: Search tool for finding certified SLPs and audiologists from ASHA

Baby’s Hearing and Communication Development Checklist: Listing of milestones that children should meet by certain ages from the NIDCD

If identified during childhood, speech disorders can be corrected efficiently, giving children greater communication opportunities. If left untreated, speech impediments can cause a variety of problems in adulthood, and may be more difficult to diagnose and treat.

Parents, teachers, doctors, speech and language professionals, and other concerned parties all have unique responsibilities in recognizing and treating speech disorders. Through professional therapy, family engagement, positive encouragement and a strong support network, individuals with speech impediments can overcome their challenges and develop essential communication skills.

Additional Sources

American Speech-Language-Hearing Association, Speech Sound Disorders

Identify the Signs, Signs of Speech and Language Disorders

Intermountain Healthcare, Phonological Disorders

MedlinePlus, Speech disorders – children

National Institutes of Health, National Institutes on Deafness and Other Communication Disorders, “Quick Statistics About Voice, Speech, Language”

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Types of Speech Impediments

Sanjana is a health writer and editor. Her work spans various health-related topics, including mental health, fitness, nutrition, and wellness.

Steven Gans, MD is board-certified in psychiatry and is an active supervisor, teacher, and mentor at Massachusetts General Hospital.

Phynart Studio / Getty Images

Articulation Errors

Ankyloglossia, treating speech disorders.

A speech impediment, also known as a speech disorder , is a condition that can affect a person’s ability to form sounds and words, making their speech difficult to understand.

Speech disorders generally become evident in early childhood, as children start speaking and learning language. While many children initially have trouble with certain sounds and words, most are able to speak easily by the time they are five years old. However, some speech disorders persist. Approximately 5% of children aged three to 17 in the United States experience speech disorders.

There are many different types of speech impediments, including:

• Articulation errors

This article explores the causes, symptoms, and treatment of the different types of speech disorders.

Speech impediments that break the flow of speech are known as disfluencies. Stuttering is the most common form of disfluency, however there are other types as well.

Symptoms and Characteristics of Disfluencies

These are some of the characteristics of disfluencies:

• Repeating certain phrases, words, or sounds after the age of 4 (For example: “O…orange,” “I like…like orange juice,” “I want…I want orange juice”)
• Adding in extra sounds or words into sentences (For example: “We…uh…went to buy…um…orange juice”)
• Elongating words (For example: Saying “orange joooose” instead of "orange juice")
• Replacing words (For example: “What…Where is the orange juice?”)
• Hesitating while speaking (For example: A long pause while thinking)
• Pausing mid-speech (For example: Stopping abruptly mid-speech, due to lack of airflow, causing no sounds to come out, leading to a tense pause)

In addition, someone with disfluencies may also experience the following symptoms while speaking:

• Vocal tension and strain
• Head jerking
• Eye blinking
• Lip trembling

Causes of Disfluencies

People with disfluencies tend to have neurological differences in areas of the brain that control language processing and coordinate speech, which may be caused by:

• Genetic factors
• Trauma or infection to the brain
• Environmental stressors that cause anxiety or emotional distress
• Neurodevelopmental conditions like attention-deficit hyperactivity disorder (ADHD)

Articulation disorders occur when a person has trouble placing their tongue in the correct position to form certain speech sounds. Lisping is the most common type of articulation disorder.

Symptoms and Characteristics of Articulation Errors

These are some of the characteristics of articulation disorders:

• Substituting one sound for another . People typically have trouble with ‘r’ and ‘l’ sounds. (For example: Being unable to say “rabbit” and saying “wabbit” instead)
• Lisping , which refers specifically to difficulty with ‘s’ and ‘z’ sounds. (For example: Saying “thugar” instead of “sugar” or producing a whistling sound while trying to pronounce these letters)
• Omitting sounds (For example: Saying “coo” instead of “school”)
• Adding sounds (For example: Saying “pinanio” instead of “piano”)
• Making other speech errors that can make it difficult to decipher what the person is saying. For instance, only family members may be able to understand what they’re trying to say.

Causes of Articulation Errors

Articulation errors may be caused by:

• Genetic factors, as it can run in families
• Hearing loss , as mishearing sounds can affect the person’s ability to reproduce the sound
• Changes in the bones or muscles that are needed for speech, including a cleft palate (a hole in the roof of the mouth) and tooth problems
• Damage to the nerves or parts of the brain that coordinate speech, caused by conditions such as cerebral palsy , for instance

Ankyloglossia, also known as tongue-tie, is a condition where the person’s tongue is attached to the bottom of their mouth. This can restrict the tongue’s movement and make it hard for the person to move their tongue.

Symptoms and Characteristics of Ankyloglossia

Ankyloglossia is characterized by difficulty pronouncing ‘d,’ ‘n,’ ‘s,’ ‘t,’ ‘th,’ and ‘z’ sounds that require the person’s tongue to touch the roof of their mouth or their upper teeth, as their tongue may not be able to reach there.

Apart from speech impediments, people with ankyloglossia may also experience other symptoms as a result of their tongue-tie. These symptoms include:

• Difficulty breastfeeding in newborns
• Trouble swallowing
• Limited ability to move the tongue from side to side or stick it out
• Difficulty with activities like playing wind instruments, licking ice cream, or kissing
• Mouth breathing

Causes of Ankyloglossia

Ankyloglossia is a congenital condition, which means it is present from birth. A tissue known as the lingual frenulum attaches the tongue to the base of the mouth. People with ankyloglossia have a shorter lingual frenulum, or it is attached further along their tongue than most people’s.

Dysarthria is a condition where people slur their words because they cannot control the muscles that are required for speech, due to brain, nerve, or organ damage.

Symptoms and Characteristics of Dysarthria

Dysarthria is characterized by:

• Slurred, choppy, or robotic speech
• Rapid, slow, or soft speech
• Breathy, hoarse, or nasal voice

Additionally, someone with dysarthria may also have other symptoms such as difficulty swallowing and inability to move their tongue, lips, or jaw easily.

Causes of Dysarthria

Dysarthria is caused by paralysis or weakness of the speech muscles. The causes of the weakness can vary depending on the type of dysarthria the person has:

• Central dysarthria is caused by brain damage. It may be the result of neuromuscular diseases, such as cerebral palsy, Huntington’s disease, multiple sclerosis, muscular dystrophy, Huntington’s disease, Parkinson’s disease, or Lou Gehrig’s disease. Central dysarthria may also be caused by injuries or illnesses that damage the brain, such as dementia, stroke, brain tumor, or traumatic brain injury .
• Peripheral dysarthria is caused by damage to the organs involved in speech. It may be caused by congenital structural problems, trauma to the mouth or face, or surgery to the tongue, mouth, head, neck, or voice box.

Apraxia, also known as dyspraxia, verbal apraxia, or apraxia of speech, is a neurological condition that can cause a person to have trouble moving the muscles they need to create sounds or words. The person’s brain knows what they want to say, but is unable to plan and sequence the words accordingly.

Symptoms and Characteristics of Apraxia

These are some of the characteristics of apraxia:

• Distorting sounds: The person may have trouble pronouncing certain sounds, particularly vowels, because they may be unable to move their tongue or jaw in the manner required to produce the right sound. Longer or more complex words may be especially harder to manage.
• Being inconsistent in their speech: For instance, the person may be able to pronounce a word correctly once, but may not be able to repeat it. Or, they may pronounce it correctly today and differently on another day.
• Grasping for words: The person may appear to be searching for the right word or sound, or attempt the pronunciation several times before getting it right.
• Making errors with the rhythm or tone of speech: The person may struggle with using tone and inflection to communicate meaning. For instance, they may not stress any of the words in a sentence, have trouble going from one syllable in a word to another, or pause at an inappropriate part of a sentence.

Causes of Apraxia

Apraxia occurs when nerve pathways in the brain are interrupted, which can make it difficult for the brain to send messages to the organs involved in speaking. The causes of these neurological disturbances can vary depending on the type of apraxia the person has:

• Childhood apraxia of speech (CAS): This condition is present from birth and is often hereditary. A person may be more likely to have it if a biological relative has a learning disability or communication disorder.
• Acquired apraxia of speech (AOS): This condition can occur in adults, due to brain damage as a result of a tumor, head injury , stroke, or other illness that affects the parts of the brain involved in speech.

If you have a speech impediment, or suspect your child might have one, it can be helpful to visit your healthcare provider. Your primary care physician can refer you to a speech-language pathologist, who can evaluate speech, diagnose speech disorders, and recommend treatment options.

The diagnostic process may involve a physical examination as well as psychological, neurological, or hearing tests, in order to confirm the diagnosis and rule out other causes.

Treatment for speech disorders often involves speech therapy, which can help you learn how to move your muscles and position your tongue correctly in order to create specific sounds. It can be quite effective in improving your speech.

Children often grow out of milder speech disorders; however, special education and speech therapy can help with more serious ones.

For ankyloglossia, or tongue-tie, a minor surgery known as a frenectomy can help detach the tongue from the bottom of the mouth.

A Word From Verywell

A speech impediment can make it difficult to pronounce certain sounds, speak clearly, or communicate fluently. 

Living with a speech disorder can be frustrating because people may cut you off while you’re speaking, try to finish your sentences, or treat you differently. It can be helpful to talk to your healthcare providers about how to cope with these situations.

You may also benefit from joining a support group, where you can connect with others living with speech disorders.

National Library of Medicine. Speech disorders . Medline Plus.

Centers for Disease Control and Prevention. Language and speech disorders .

Cincinnati Children's Hospital. Stuttering .

National Institute on Deafness and Other Communication Disorders. Quick statistics about voice, speech, and language .

Cleveland Clinic. Speech impediment .

Lee H, Sim H, Lee E, Choi D. Disfluency characteristics of children with attention-deficit/hyperactivity disorder symptoms . J Commun Disord . 2017;65:54-64. doi:10.1016/j.jcomdis.2016.12.001

Nemours Foundation. Speech problems .

Penn Medicine. Speech and language disorders .

Cleveland Clinic. Tongue-tie .

University of Rochester Medical Center. Ankyloglossia .

Cleveland Clinic. Dysarthria .

National Institute on Deafness and Other Communication Disorders. Apraxia of speech .

Cleveland Clinic. Childhood apraxia of speech .

Stanford Children’s Hospital. Speech sound disorders in children .

Abbastabar H, Alizadeh A, Darparesh M, Mohseni S, Roozbeh N. Spatial distribution and the prevalence of speech disorders in the provinces of Iran . J Med Life . 2015;8(Spec Iss 2):99-104.

By Sanjana Gupta Sanjana is a health writer and editor. Her work spans various health-related topics, including mental health, fitness, nutrition, and wellness.

What is a speech impairment?

A speech impairment refers to an impaired ability to produce speech sounds and may range from mild to severe. It may include an articulation disorder, characterized by omissions or distortions of speech sounds; a fluency disorder, characterized by atypical flow, rhythm, and/or repetitions of sounds; or a voice disorder, characterized by abnormal pitch, volume, resonance, vocal quality, or duration.

The American Speech-Language Hearing Association (ASHA) has published its official definitions in Definitions of Communication Disorders and Variations .

Additional information is available from Speech and Language Impairments  hosted by the Center for Parent Information and Resources.

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Comprehenisve Overview of Speech and Language Impairments

Comprehensive overview of speech and language impairments.

Speech and language disorders refer to problems in communication and related areas such as oral motor function. These delays and disorders range from simple sound substitutions to the inability to understand or use language or use the oral-motor mechanism for functional speech and feeding. Some causes of speech and language disorders include hearing loss, neurological disorders, brain injury, mental retardation, drug abuse, physical impairments such as cleft lip or palate, and vocal abuse or misuse. Frequently, however, the cause is unknown.

More than one million of the students served in the public schools’ special education programs in the 2000-2001 school year were categorized as having a speech or language impairment. This estimate does not include children who have speech/language problems secondary to other conditions such as deafness. Language disorders may be related to other disabilities such as mental retardation, autism, or cerebral palsy. It is estimated that communication disorders (including speech, language, and hearing disorders) affect one of every 10 people in the United States.

Characteristics

A child's communication is considered delayed when the child is noticeably behind his or her peers in the acquisition of speech and/or language skills. Sometimes a child will have greater receptive (understanding) than expressive (speaking) language skills, but this is not always the case.

Speech disorders refer to difficulties producing speech sounds or problems with voice quality. They might be characterized by an interruption in the flow or rhythm of speech, such as stuttering, which is called dysfluency. Speech disorders may be problems with the way sounds are formed, called articulation or phonological disorders, or they may be difficulties with the pitch, volume or quality of the voice. There may be a combination of several problems. People with speech disorders have trouble using some speech sounds, which can also be a symptom of a delay. They may say "see" when they mean "ski" or they may have trouble using other sounds like "l" or "r." Listeners may have trouble understanding what someone with a speech disorder is trying to say. People with voice disorders may have trouble with the way their voices sound.

A language disorder is an impairment in the ability to understand and/or use words in context, both verbally and nonverbally. Some characteristics of language disorders include improper use of words and their meanings, inability to express ideas, inappropriate grammatical patterns, reduced vocabulary and inability to follow directions. One or a combination of these characteristics may occur in children who are affected by language learning disabilities or developmental language delay. Children may hear or see a word but not be able to understand its meaning. They may have trouble getting others to understand what they are trying to communicate.

Educational Implications

Because all communication disorders carry the potential to isolate individuals from their social and educational surroundings, it is essential to find appropriate timely intervention. While many speech and language patterns can be called "baby talk" and are part of a young child's normal development, they can become problems if they are not outgrown as expected. In this way an initial delay in speech and language or an initial speech pattern can become a disorder which can cause difficulties in learning. Because of the way the brain develops, it is easier to learn language and communication skills before the age of 5. When children have muscular disorders, hearing problems or developmental delays, their acquisition of speech, language and related skills is often affected

Speech-language pathologists assist children who have communication disorders in various ways. They provide individual therapy for the child; consult with the child’s teacher about the most effective ways to facilitate the child’s communication in the class setting; and work closely with the family to develop goals and techniques for effective therapy in class and at home. The speech-language pathologist may assist vocational teachers and counselors in establishing communication goals related to the work experiences of students and suggest strategies that are effective for the important transition from school to employment and adult life.

Technology can help children whose physical conditions make communication difficult. The use of electronic communication systems allow nonspeaking people and people with severe physical disabilities to engage in the give and take of shared thought.

Vocabulary and concept growth continues during the years children are in school. Reading and writing are taught and, as students get older, the understanding and use of language becomes more complex. Communication skills are at the heart of the education experience. Speech and/or language therapy may continue throughout a student’s school years either in the form of direct therapy or on a consultant basis.

Specific Types of Communication Disorders

What is aphasia.

Aphasia is a language disorder that results from damage to portions of the brain that are responsible for language. For most people, these are parts of the left side (hemisphere) of the brain. Aphasia usually occurs suddenly, often as the result of a stroke or head injury, but it may also develop slowly, as in the case of a brain tumor. The disorder impairs both the expression and understanding of language as well as reading and writing. Aphasia may co-occur with speech disorders such as dysarthria or apraxia of speech, which also result from brain damage.

What causes aphasia?

Aphasia is caused by damage to one or more of the language areas of the brain. Many times, the cause of the brain injury is a stroke. A stroke occurs when, for some reason, blood is unable to reach a part of the brain. Brain cells die when they do not receive their normal supply of blood, which carries oxygen and important nutrients. Other causes of brain injury are severe blows to the head, brain tumors, brain infections, and other conditions of the brain.

How is aphasia diagnosed?

Aphasia is usually first recognized by the physician who treats the individual for his or her brain injury. Frequently this is a neurologist. The physician typically performs tests that require the individual to follow commands, answer questions, name objects, and converse. If the physician suspects aphasia, the individual is often referred to a speech-language pathologist, who performs a comprehensive examination of the person's ability to understand, speak, read, and write.

What Is Apraxia of Speech?

Apraxia of speech, also known as verbal apraxia or dyspraxia, is a speech disorder in which a person has trouble saying what he or she wants to say correctly and consistently. It is not due to weakness or paralysis of the speech muscles (the muscles of the face, tongue, and lips). The severity of apraxia of speech can range from mild to severe.

What Are the Types and Causes of Apraxia?

There are two main types of speech apraxia: acquired apraxia of speech and developmental apraxia of speech. Acquired apraxia of speech can affect a person at any age, although it most typically occurs in adults. It is caused by damage to the parts of the brain that are involved in speaking, and involves the loss or impairment of existing speech abilities. The disorder may result from a stroke, head injury, tumor, or other illness affecting the brain. Acquired apraxia of speech may occur together with muscle weakness affecting speech production (dysarthria) or language difficulties caused by damage to the nervous system (aphasia).

Developmental apraxia of speech (DAS) occurs in children and is present from birth. It appears to affect more boys than girls. This speech disorder goes by several other names, including developmental verbal apraxia, developmental verbal dyspraxia, articulatory apraxia, and childhood apraxia of speech. DAS is different from what is known as a developmental delay of speech, in which a child follows the "typical" path of speech development but does so more slowly than normal.

The cause or causes of DAS are not yet known. Some scientists believe that DAS is a disorder related to a child's overall language development. Others believe it is a neurological disorder that affects the brain's ability to send the proper signals to move the muscles involved in speech. However, brain imaging and other studies have not found evidence of specific brain lesions or differences in brain structure in children with DAS. Children with DAS often have family members who have a history of communication disorders or learning disabilities. This observation and recent research findings suggest that genetic factors may play a role in the disorder.

What Are the Symptoms?

People with either form of apraxia of speech may have a number of different speech characteristics, or symptoms. One of the most notable symptoms is difficulty putting sounds and syllables together in the correct order to form words. Longer or more complex words are usually harder to say than shorter or simpler words. People with apraxia of speech also tend to make inconsistent mistakes when speaking. For example, they may say a difficult word correctly but then have trouble repeating it, or they may be able to say a particular sound one day and have trouble with the same sound the next day. People with apraxia of speech often appear to be groping for the right sound or word, and may try saying a word several times before they say it correctly. Another common characteristic of apraxia of speech is the incorrect use of "prosody" -- that is, the varying rhythms, stresses, and inflections of speech that are used to help express meaning.

Children with developmental apraxia of speech generally can understand language much better than they are able to use language to express themselves. Some children with the disorder may also have other problems. These can include other speech problems, such as dysarthria; language problems such as poor vocabulary, incorrect grammar, and difficulty in clearly organizing spoken information; problems with reading, writing, spelling, or math; coordination or "motor-skill" problems; and chewing and swallowing difficulties.

The severity of both acquired and developmental apraxia of speech varies from person to person. Apraxia can be so mild that a person has trouble with very few speech sounds or only has occasional problems pronouncing words with many syllables. In the most severe cases, a person may not be able to communicate effectively with speech, and may need the help of alternative or additional communication methods.

How Is It Diagnosed?

Professionals known as speech-language pathologists play a key role in diagnosing and treating apraxia of speech. There is no single factor or test that can be used to diagnose apraxia. In addition, speech-language experts do not agree about which specific symptoms are part of developmental apraxia. The person making the diagnosis generally looks for the presence of some, or many, of a group of symptoms, including those described above. Ruling out other contributing factors, such as muscle weakness or language-comprehension problems, can also help with the diagnosis.

To diagnose developmental apraxia of speech, parents and professionals may need to observe a child's speech over a period of time. In formal testing for both acquired and developmental apraxia, the speech-language pathologist may ask the person to perform speech tasks such as repeating a particular word several times or repeating a list of words of increasing length (for example, love, loving, lovingly). For acquired apraxia of speech, a speech-language pathologist may also examine a person's ability to converse, read, write, and perform non-speech movements. Brain-imaging tests such as magnetic resonance imaging (MRI) may also be used to help distinguish acquired apraxia of speech from other communication disorders in people who have experienced brain damage.

How Is It Treated?

In some cases, people with acquired apraxia of speech recover some or all of their speech abilities on their own. This is called spontaneous recovery. Children with developmental apraxia of speech will not outgrow the problem on their own. Speech-language therapy is often helpful for these children and for people with acquired apraxia who do not spontaneously recover all of their speech abilities.

Speech-language pathologists use different approaches to treat apraxia of speech, and no single approach has been proven to be the most effective. Therapy is tailored to the individual and is designed to treat other speech or language problems that may occur together with apraxia. Each person responds differently to therapy, and some people will make more progress than others. People with apraxia of speech usually need frequent and intensive one-on-one therapy. Support and encouragement from family members and friends are also important.

In severe cases, people with acquired or developmental apraxia of speech may need to use other ways to express themselves. These might include formal or informal sign language, a language notebook with pictures or written words that the person can show to other people, or an electronic communication device such as a portable computer that writes and produces speech.

Auditory  Preocessing Disorder (APD)

What is auditory processing.

Auditory processing is a term used to describe what happens when your brain recognizes and interprets the sounds around you. Humans hear when energy that we recognize as sound travels through the ear and is changed into electrical information that can be interpreted by the brain. The "disorder" part of auditory processing disorder means that something is adversely affecting the processing or interpretation of the information.

Children with APD often do not recognize subtle differences between sounds in words, even though the sounds themselves are loud and clear. For example, the request "Tell me how a chair and a couch are alike" may sound to a child with APD like "Tell me how a couch and a chair are alike." It can even be understood by the child as "Tell me how a cow and a hair are alike." These kinds of problems are more likely to occur when a person with APD is in a noisy environment or when he or she is listening to complex information.

APD goes by many other names. Sometimes it is referred to as central auditory processing disorder (CAPD). Other common names are auditory perception problem, auditory comprehension deficit, central auditory dysfunction, central deafness, and so-called "word deafness."

What causes auditory processing difficulty?

We are not sure. Human communication relies on taking in complicated perceptual information from the outside world through the senses, such as hearing, and interpreting that information in a meaningful way. Human communication also requires certain mental abilities, such as attention and memory. Scientists still do not understand exactly how all of these processes work and interact or how they malfunction in cases of communication disorders. Even though your child seems to "hear normally," he or she may have difficulty using those sounds for speech and language.

The cause of APD is often unknown. In children, auditory processing difficulty may be associated with conditions such as dyslexia, attention deficit disorder, autism, autism spectrum disorder, specific language impairment, pervasive developmental disorder, or developmental delay. Sometimes this term has been misapplied to children who have no hearing or language disorder but have challenges in learning.

What are the symptoms of possible auditory processing difficulty?

Children with auditory processing difficulty typically have normal hearing and intelligence. However, they have also been observed to

• Have trouble paying attention to and remembering information presented orally
• Have problems carrying out multistep directions
• Have poor listening skills
• Need more time to process information
• Have low academic performance
• Have behavior problems
• Have language difficulty (e.g., they confuse syllable sequences and have problems developing vocabulary and understanding language)
• Have difficulty with reading, comprehension, spelling, and vocabulary

How is suspected auditory processing difficulty diagnosed in children?

You, a teacher, or a day care provider may be the first person to notice symptoms of auditory processing difficulty in your child. So talking to your child's teacher about school or preschool performance is a good idea. Many health professionals can also diagnose APD in your child. There may need to be ongoing observation with the professionals involved.

Much of what will be done by these professionals will be to rule out other problems. A pediatrician or a family doctor can help rule out possible diseases that can cause some of these same symptoms. He or she will also measure growth and development. If there is a disease or disorder related to hearing, you may be referred to an otolaryngologist--a physician who specializes in diseases and disorders of the head and neck.

To determine whether the child has a hearing function problem, an audiologic evaluation is necessary. An audiologist will give tests that can determine the softest sounds and words a person can hear and other tests to see how well people can recognize sounds in words and sentences. For example, for one task, the audiologist might have the child listen to different numbers or words in the right and the left ear at the same time. Another common audiologic task involves giving the child two sentences, one louder than the other, at the same time. The audiologist is trying to identify the processing problem.

A speech-language pathologist can find out how well a person understands and uses language. A mental health professional can give you information about cognitive and behavioral challenges that may contribute to problems in some cases, or he or she may have suggestions that will be helpful. Because the audiologist can help with the functional problems of hearing and processing, and the speech-language pathologist is focused on language, they may work as a team with the child.

Developmental Dyspraxia

What is developmental dyspraxia.

Developmental dyspraxia is a disorder characterized by an impairment in the ability to plan and carry out sensory and motor tasks. Generally, individuals with the disorder appear "out of sync" with their environment. Symptoms vary and may include poor balance and coordination, clumsiness, vision problems, perception difficulties, emotional and behavioral problems, difficulty with reading, writing, and speaking, poor social skills, poor posture, and poor short-term memory. Although individuals with the disorder may be of average or above average intelligence, they may behave immaturely.

Is there any treatment?

Treatment is symptomatic and supportive and may include occupational and speech therapy, and "cueing" or other forms of communication such as using pictures and hand gestures. Many children with the disorder require special education.

What is the prognosis?

Developmental dyspraxia is a lifelong disorder. Many individuals are able to compensate for their disabilities through occupational and speech therapy.

Landau-Kleffner Syndrome

What is landau-kleffner syndrome.

Landau-Kleffner syndrome (LKS) is a childhood disorder. A major feature of LKS is the gradual or sudden loss of the ability to understand and use spoken language. All children with LKS have abnormal electrical brain waves that can be documented by an electroencephalogram (EEG), a recording of the electric activity of the brain. Approximately 80 percent of the children with LKS have one or more epileptic seizures that usually occur at night. Behavioral disorders such as hyperactivity, aggressiveness and depression can also accompany this disorder. LKS may also be called infantile acquired aphasia, acquired epileptic aphasia or aphasia with convulsive disorder. This syndrome was first described in 1957 by Dr. William M. Landau and Dr. Frank R. Kleffner, who identified six children with the disorder.

What are the signs of Landau-Kleffner syndrome?

LKS occurs most frequently in normally developing children who are between 3 and 7 years of age. For no apparent reason, these children begin having trouble understanding what is said to them. Doctors often refer to this problem as auditory agnosiaor "word deafness." The auditory agnosia may occur slowly or very quickly. Parents often think that the child is developing a hearing problem or has become suddenly deaf. Hearing tests, however, show normal hearing. Children may also appear to be autistic or developmentally delayed.

The inability to understand language eventually affects the child's spoken language which may progress to a complete loss of the ability to speak (mutism). Children who have learned to read and write before the onset of auditory agnosia can often continue communicating through written language. Some children develop a type of gestural communication or sign-like language. The communication problems may lead to behavioral or psychological problems. Intelligence usually appears to be unaffected.

The loss of language may be preceded by an epileptic seizure that usually occurs at night. At some time, 80 percent of children with LKS have one or more seizures. The seizures usually stop by the time the child becomes a teenager. All LKS children have abnormal electrical brain activity on both the right and left sides of their brains.

Laryngeal Papillomatosis

What is laryngeal papillomatosis.

Laryngeal papillomatosis is a disease consisting of tumors that grow inside the larynx (voice box), vocal cords, or the air passages leading from the nose into the lungs (respiratory tract). It is a rare disease caused by the human papilloma virus (HPV). Although scientists are uncertain how people are infected with HPV, they have identified more than 60 types of HPVs. Tumors caused by HPVs, called papillomas, are often associated with two specific types of the virus (HPV 6 and HPV 11). They may vary in size and grow very quickly. Eventually, these tumors may block the airway passage and cause difficulty breathing.

Laryngeal papillomatosis affects infants and small children as well as adults. Between 60 and 80 percent of cases occur in children, usually before the age of three. Because the tumors grow quickly, young children with the disease may find it difficult to breathe when sleeping, or they may experience difficulty swallowing. Adults with laryngeal papillomatosis may experience hoarseness, chronic coughing, or breathing problems.

How is laryngeal papillomatosis disagnosed?

There are several tests to diagnose laryngeal papillomatosis. Two routine tests are indirect and direct laryngoscopy. An indirect laryngoscopy is done in an office by a speech-language pathologist or by a doctor. To examine the larynx for tumors, the doctor places a small mirror in the back of the throat and angles the mirror down towards the larynx. A direct laryngoscopy is performed in the operating room under general anesthesia.

This procedure is usually used with children or adults during lengthy examinations to minimize discomfort. It involves looking directly at the larynx. Direct laryngoscopy allows the doctor to view the vocal folds and other parts of the larynx under high magnification and samples of unusual tissue lesions that may be in the larynx or other parts of the throat.

Spasmodic dysphonia

What is spasmodic dysphonia.

Spasmodic dysphonia (or laryngeal dystonia) is a voice disorder caused by involuntary movements of one or more muscles of the larynx or voice box. Individuals who have spasmodic dysphonia may have occasional difficulty saying a word or two or they may experience sufficient difficulty to interfere with communication. Spasmodic dysphonia causes the voice to break or to have a tight, strained or strangled quality. There are three different types of spasmodic dysphonia.

What are the types of Spasmodic Dysphonia?

The three types of spasmodic dysphonia are adductor spasmodic dysphonia, abductor spasmodic dysphonia and mixed spasmodic dysphonia.

What are the features of spasmodic dysphonia?

In adductor spasmodic dysphonia, sudden involuntary muscle movements or spasms cause the vocal folds (or vocal cords) to slam together and stiffen. These spasms make it difficult for the vocal folds to vibrate and produce voice. Words are often cut off or difficult to start because of the muscle spasms. Therefore, speech may be choppy and sound similar to stuttering. The voice of an individual with adductor spasmodic dysphonia is commonly described as strained or strangled and full of effort. Surprisingly, the spasms are usually absent while whispering, laughing, singing, speaking at a high pitch or speaking while breathing in. Stress, however, often makes the muscle spasms more severe.

In abductor spasmodic dysphonia, sudden involuntary muscle movements or spasms cause the vocal folds to open. The vocal folds can not vibrate when they are open. The open position of the vocal folds also allows air to escape from the lungs during speech. As a result, the voices of these individuals often sound weak, quiet and breathy or whispery. As with adductor spasmodic dysphonia, the spasms are often absent during activities such as laughing or singing.

Mixed spasmodic dysphonia involves muscles that open the vocal folds as well as muscles that close the vocal folds and therefore has features of both adductor and abductor spasmodic dysphonia.

(For other types of Communication Disorders and further information on this topic, , use NASET's table of hundreds of links to Speech and Language Impairments. This table will be found when you close out of this window.)

Brice, A. (2001). Children with communication disorders (ERIC Digest #E617). Arlington, VA: ERIC Clearinghouse on Disabilities and Gifted Education. (Available online at: http://ericec.org/digests/e617.html )

Charkins, H. (1996). Children with facial differences: A parents' guide. Bethesda, MD: Woodbine House. (Telephone: 800.843.7323. Web: www.woodbinehouse.com )

Cleft Palate Foundation. (1997). For parents of newborn babies with cleft lip/cleft palate. Chapel Hill, NC: Author. (Telephone: 800.242.5338. Also available online at: www.cleftline.org )

Gruman-Trinker, C. (2001). Your cleft-affected child: The complete book of information, resources and hope. Alameda, CA: Hunter House. (Web: www.hunterhouse.com )

Hamaguchi, P. M. (2001). Childhood speech, language, & listening problems: What every parent should know (2nd ed.). New York: John Wiley & Sons, Inc. (Telephone: 800.225.5945. Web: www.wiley.com )

Organizations

Alliance for Technology Access 2175 E. Francisco Boulevard, Suite L San Rafael, CA 94901 800.455.7970; 415.455.4575 Email: [email protected] Web: www.ataccess.org

American Speech-Language-Hearing Association (ASHA) 10801 Rockville Pike Rockville, MD 20852 301.897.5700 (V/TTY); 800.638.8255 Email: [email protected] Web: www.asha.org

Childhood Apraxia of Speech Association of North America (CASANA) 123 Eisele Road Cheswick, PA 15024 412.767.6589 Email: [email protected] Web: www.apraxia-kids.org

Cleft Palate Foundation 104 South Estes Drive, Suite 204 Chapel Hill, NC 27514 800.242.5338; 919.933.9044 Email: [email protected] Web: www.cleftline.org

Easter Seals--National Office 230 West Monroe Street, Suite 1800 Chicago, IL 60606 312.726.6200 312.726.4258 (TTY) 800.221.6827 Email: [email protected] Web: www.easter-seals.org

Learning Disabilities Association of America (LDA) 4156 Library Road Pittsburgh, PA 15234-1349 412.341.1515 Email: [email protected] Web: www.ldaamerica.org

Scottish Rite Foundation Southern Jurisdiction, U.S.A., Inc. 1733 Sixteenth Street, N.W. Washington, DC 20009-3199 202.232.3579 Web: www.srmason-sj.org/web/index.htm

Trace Research and Development Center University of Wisconsin-Madison 1550 Engineering Dr. 2107 Engineering Hall Madison, WI 53706 608.262-6966; 608.263.5408 (TTY) Email:

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Speech and Language Impairments

The Individuals with Disabilities Education Act, or IDEA, defines the term “speech or language impairment” as follows:

“(11)  Speech or language impairment  means a communication disorder, such as stuttering, impaired articulation, a language impairment, or a voice impairment, that adversely affects a child’s educational performance.” [34 CFR §300.8(c)(11]

(Parent Information and Resources Center, 2015)

Table of Contents

What is a Speech and Language Impairment?

Characteristics of speech or language impairments, interventions and strategies, related service provider-slp.

• A Day in the Life of an SLP

Assistive Technology

Speech and language impairment  are basic categories that might be drawn in issues of communication involve hearing, speech, language, and fluency.

A speech impairment is characterized by difficulty in articulation of words. Examples include stuttering or problems producing particular sounds. Articulation refers to the sounds, syllables, and phonology produced by the individual. Voice, however, may refer to the characteristics of the sounds produced—specifically, the pitch, quality, and intensity of the sound. Often, fluency will also be considered a category under speech, encompassing the characteristics of rhythm, rate, and emphasis of the sound produced.

A language impairment is a specific impairment in understanding and sharing thoughts and ideas, i.e. a disorder that involves the processing of linguistic information. Problems that may be experienced can involve the form of language, including grammar, morphology, syntax; and the functional aspects of language, including semantics and pragmatics.

(Wikipedia, n.d./ Speech and Language Impairment)

*It’s important to realize that a language delay isn’t the same thing as a speech or language impairment. Language delay is a very common developmental problem—in fact, the most common, affecting 5-10% of children in preschool.  With language delay, children’s language is developing in the expected sequence, only at a slower rate. In contrast, speech and language disorder refers to abnormal language development.  Distinguishing between the two is most reliably done by a certified speech-language pathologist.  (CPIR, 2015)

The characteristics of speech or language impairments will vary depending upon the type of impairment involved. There may also be a combination of several problems.

When a child has an  articulation disorder , he or she has difficulty making certain sounds. These sounds may be left off, added, changed, or distorted, which makes it hard for people to understand the child.

Leaving out or changing certain sounds is common when young children are learning to talk, of course. A good example of this is saying “wabbit” for “rabbit.” The incorrect articulation isn’t necessarily a cause for concern unless it continues past the age where children are expected to produce such sounds correctly

Fluency  refers to the flow of speech. A fluency disorder means that something is disrupting the rhythmic and forward flow of speech—usually, a stutter. As a result, the child’s speech contains an “abnormal number of repetitions, hesitations, prolongations, or disturbances. Tension may also be seen in the face, neck, shoulders, or fists.”

Voice  is the sound that’s produced when air from the lungs pushes through the voice box in the throat (also called the larnyx), making the vocal folds within vibrate. From there, the sound generated travels up through the spaces of the throat, nose, and mouth, and emerges as our “voice.”

A voice disorder involves problems with the pitch, loudness, resonance, or quality of the voice. The voice may be hoarse, raspy, or harsh. For some, it may sound quite nasal; others might seem as if they are “stuffed up.” People with voice problems often notice changes in pitch, loss of voice, loss of endurance, and sometimes a sharp or dull pain associated with voice use.

Language  has to do with meanings, rather than sounds.  A language disorder refers to an impaired ability to understand and/or use words in context. A child may have an expressive language disorder (difficulty in expressing ideas or needs), a receptive language disorder (difficulty in understanding what others are saying), or a mixed language disorder (which involves both).

Some characteristics of language disorders include:

• improper use of words and their meanings,
• inability to express ideas,
• inappropriate grammatical patterns,
• reduced vocabulary, and
• inability to follow directions.

Children may hear or see a word but not be able to understand its meaning. They may have trouble getting others to understand what they are trying to communicate. These symptoms can easily be mistaken for other disabilities such as autism or learning disabilities, so it’s very important to ensure that the child receives a thorough evaluation by a certified speech-language pathologist.

(CPIR, 2015)

• Use the (Cash, Wilson, and DeLaCruz, n.d) reading and/or the [ESU 8 Wednesday Webinar] to develop this section of the summary. 

Cash, A, Wilson, R. and De LaCruz, E.(n,d.) Practical Recommendations for Teachers: Language Disorders. https://www.education.udel.edu/wp-content/uploads/2013/01/LanguageDisorders.pdf 

[ESU 8 Wednesday Webinar] Speech Language Strategies for Classroom Teachers.- video below

Video: Speech Language Strategies for Classroom Teachers (15:51 minutes)’

[ESU 8 Wednesday Webinars]. (2015, Nov. 19) . Speech Language Strategies for Classroom Teachers. [Video FIle]. From https://youtu.be/Un2eeM7DVK8

Most, if not all, students with a speech or language impairment will need  speech-language pathology services . This related service is defined by IDEA as follows:

(15)  Speech-language pathology services  include—

(i) Identification of children with speech or language impairments;

(ii) Diagnosis and appraisal of specific speech or language impairments;

(iii) Referral for medical or other professional attention necessary for the habilitation of speech or language impairments;

(iv) Provision of speech and language services for the habilitation or prevention of communicative impairments; and

(v) Counseling and guidance of parents, children, and teachers regarding speech and language impairments. [34 CFR §300.34(c)(15)]

Thus, in addition to diagnosing the nature of a child’s speech-language difficulties, speech-language pathologists also provide:

• individual therapy for the child;
• consult with the child’s teacher about the most effective ways to facilitate the child’s communication in the class setting; and
• work closely with the family to develop goals and techniques for effective therapy in class and at home.

Speech and/or language therapy may continue throughout a student’s school years either in the form of direct therapy or on a consultant basis.

A Day in the Life of an SLP

Christina is a speech-language pathologist.  She works with children and adults who have impairments in their speech, voice, or language skills. These impairments can take many forms, as her schedule today shows.

First comes Robbie.  He’s a cutie pie in the first grade and has recently been diagnosed with childhood apraxia of speech—or CAS. CAS is a speech disorder marked by choppy speech. Robbie also talks in a monotone, making odd pauses as he tries to form words. Sometimes she can see him struggle. It’s not that the muscles of his tongue, lips, and jaw are weak. The difficulty lies in the brain and how it communicates to the muscles involved in producing speech. The muscles need to move in precise ways for speech to be intelligible. And that’s what she and Robbie are working on.

Next, Christina goes down the hall and meets with Pearl  in her third grade classroom. While the other students are reading in small groups, she works with Pearl one on one, using the same storybook. Pearl has a speech disorder, too, but hers is called dysarthria. It causes Pearl’s speech to be slurred, very soft, breathy, and slow. Here, the cause is weak muscles of the tongue, lips, palate, and jaw. So that’s what Christina and Pearl work on—strengthening the muscles used to form sounds, words, and sentences, and improving Pearl’s articulation.

One more student to see—4th grader Mario , who has a stutter. She’s helping Mario learn to slow down his speech and control his breathing as he talks. Christina already sees improvement in his fluency.

Tomorrow she’ll go to a different school, and meet with different students. But for today, her day is…Robbie, Pearl, and Mario.

Assistive technology (AT) can also be very helpful to students, especially those whose physical conditions make communication difficult. Each student’s IEP team will need to consider if the student would benefit from AT such as an electronic communication system or other device. AT is often the key that helps students engage in the give and take of shared thought, complete school work, and demonstrate their learning. (CPIR, 2015)

Project IDEAL , suggests two major categories of AT computer software packages to develop the child’s speech and language skills and augmentative or alternative communication (AAC).

Augmentative and alternative communication  ( AAC ) encompasses the communication methods used to supplement or replace speech or writing for those with impairments in the production or comprehension of spoken or written language. Augmentative and alternative communication may used by individuals to compensate for severe speech-language impairments in the expression or comprehension of spoken or written language. AAC can be a permanent addition to a person’s communication or a temporary aid.

(Wikipedia, (n.d. /Augmentative and alternative communication)

Center for Parent Information and Resources (CPIR)  (2015), Speech and Language Impairments, Newark, NJ, Author, Retrieved 4.1.19 from https://www.parentcenterhub.org/speechlanguage/

Wikipedia (n.d.) Augmentative and alternative communication. From https://en.wikipedia.org/wiki/Augmentative_and_alternative_communication 

Wikipedia, (n.d.) Speech and Language Impairment. From  https://en.wikipedia.org/wiki/Speech_and_language_impairment 

Updated 8.8.23

Understanding and Supporting Learners with Disabilities Copyright © 2019 by Paula Lombardi is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License , except where otherwise noted.

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Speech Impairment: Symptoms, Causes, and When to See Your Doctor

Speech impairment in adults is a symptom that causes difficulty in speaking or pronouncing words. This can be a temporary condition, or it can be a symptom of a severe medical condition. This guide will show you what to look for and when to see a doctor.

9 minute read

Last Updated September 20, 2021

Speech impairment in adults is any symptom that causes difficulty in speaking or pronouncing words. Speech impairments can include slurred, rapid, stuttered, hoarse, or slowed speech, and they can be caused by any number of factors. 

Some cases of impaired speech may be temporary, while others are caused by an underlying medical condition. When speech impairment is sudden, then it is a symptom of a serious problem , such as a heart attack or stroke, and requires immediate medical attention.

Symptoms of Speech impairment

Along with an inability to clearly communicate verbally, you can also experience other symptoms with speech impairment. 

♦ Weakened facial muscles ♦ Difficulty remembering words ♦ Deficits with expressive language ♦ Drooling ♦ Sudden contraction of vocal muscles

Causes of Speech Impairment

The different types of speech impairment have different causes, and you can develop speech impairment suddenly or gradually. 

♦ Aphasia: This is when you have difficulty thinking of words or pronouncing them, and the potential causes of this type include head trauma, brain tumors, and degenerative diseases such as Alzheimer’s disease. 

♦ Dysarthria: This is when you have trouble moving your lips, tongue, vocal folds, or diaphragm. This typically results from degenerative muscle conditions such as multiple sclerosis as well as stroke, head trauma, Bell’s palsy, Lyme disease, and excessive alcohol consumption.

♦ Vocal disorders: This affects your ability to speak and is caused by injuries to the area, throat cancer, polyps or nodules on the vocal cords, and consumption of drugs like antidepressants. 

♦ Spasmodic dysphonia: This involves involuntary movements of the vocal cords. The exact cause is unknown, but this impairment is linked to abnormal brain functioning. 

Diseases Associated with Speech Impairment

There can be temporary causes of speech impairment, but in most cases, there is an underlying condition impacting the speech region of the brain. Sudden speech impairment can be a sign of a serious medical condition that requires immediate medical attention.

♦  Stroke : Speech impairment and disorders are common after a stroke, but they can also be signs of an impending stroke. Slurred speech, along with facial muscle changes, can indicate a stroke and should not be ignored.

♦ Cardiovascular disease : Heart disease can cause structural changes in the brain as a result of reduced blood flow. Cognitive abilities and communication can be impacted as a result.

♦ Multiple sclerosis : This condition causes lesions that damaged parts of the brain, which can impair speech patterns.

♦ Infections : Viral and bacterial infections that reach the brain can cause damage to the areas that process language, causing temporary speech impairment. 

♦ Huntington’s Disease : This disease mostly affects movement, but the majority of patients with Huntington’s also report speech difficulties.

♦ Alzheimer’s disease : Speech impairment can develop as a result of plaques in the brain that are associated with Alzheimer’s disease. 

♦ Parkinson’s : Difficulty speaking and swallowing is common with Parkinson’s disease and gets worse as the disease progresses. 

♦ Cholesterol : High cholesterol can lead to the formation of plaques in the arteries, and without treatment, these increase your risk for stroke, which can cause speech impairment.

♦ Cancer : A tumor in your brain located near the speech center will cause speech impairments as well as changes in memory, seizures, and severe headaches.

♦ Head trauma : Injury, internal bleeding, or bruising to the brain, as a result of head trauma can impact speech. Depending on the severity and location of the trauma, speech impairment may be temporary or permanent.

Diagnosis of Speech Impairment

When speech impairment appears suddenly, seek immediate medical attention . When it develops more gradually, you need to see your doctor for testing, in case there is an underlying condition as the cause. 

You may experience speech impairment after using your voice too much or after an infection, but prolonged impairment requires attention and testing for diagnosis. Your doctor will start with a physical examination and discuss your medical history and symptoms. They will also talk with you to evaluate your speech during a discussion and to determine your level of comprehension and speaking ability. 

In addition to this, testing can be done to attempt to identify possible underlying causes. The most common tests include:

♦ Blood tests ♦ Electrical current tests ♦ MRI, CT, and x-Ray scans ♦ Urine tests

It may also be necessary for you to follow up with specialists such as a neurologist, speech pathologist, or otolaryngologist for more detailed testing and analysis.

Treatment for Speech impairment

The treatment will depend on the cause and severity of your speech impairment. In all cases of speech impairment, the underlying cause needs to be treated in order to restore speech. 

Exercises can be done to help strengthen vocal cords and improve articulation. You can also use assistive communication devices. Only in certain situations will surgery or any other invasive procedure be required. If the cause of your speech impairment is a stroke or heart disease, medications are prescribed as well as surgery. Your doctor will also recommend a heart-healthy lifestyle to follow.

In addition to any medical treatment plan given to you by your doctor, there are things you can try to help protect your voice, and prevent or limit the severity of a speech impairment. 

♦ Always wear protective headgear to prevent brain injuries. ♦ Quit or avoid smoking and second-hand smoke to reduce the risk of throat cancer. ♦ Limit consumption of alcohol. ♦ Get regular exercise to reduce the risk of stroke. ♦ Follow a balanced diet to protect against hypertension and high cholesterol.

Natural Treatment for Speech Impairment

Most of the causes of speech impairment will require medical treatment. However, there are certain conditions related to heart health that you can prevent naturally. Stroke and atherosclerosis are both related to high cholesterol and clogged arteries. 

By incorporating specific natural ingredients into your diet, you can promote overall heart health by reducing cholesterol levels. This will reduce your risk of heart-related conditions that can cause speech impairment. The top ingredients to try include:

♦ Berberine bark extract both lowers cholesterol and fights inflammation to protect against heart disease.  ♦ Chromium benefits the heart by reducing the risk of high cholesterol and arterial clogs . This significantly reduces the risk of stroke. ♦ Lion’s mane mushroom improves the good-to-bad ratio of cholesterol in your blood to protect against stroke. ♦ Niacin works to lower cholesterol and blood lipid levels to reduce the risk of heart attack and stroke. Studies have found that it works more effectively than cholesterol-lowering statins.  ♦ Pine bark extract helps lower bad cholesterol, which prevents clogged arteries and reduces the risk of stroke. This extract also reduces inflammation that can cause platelets to clump together, forming dangerous clots known to increase stroke risk.

When to See Your Doctor

The gradual development of speech impairment can be caused by a number of conditions or factors that can be effectively treated once identified. 

If you notice the sudden onset of any speech impairment, you need to seek immediate medical attention, as this is a common sign of a stroke. Without treatment, a stroke can cause permanent damage to your heart and brain and even death. 

While speech impairment may develop from a relatively harmless condition, the risk of stroke cannot be ignored, so be sure to seek help if impairment appears suddenly.

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speech impediment

Definition of speech impediment

Examples of speech impediment in a sentence.

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'speech impediment.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Dictionary Entries Near speech impediment

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Cite this Entry

“Speech impediment.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/speech%20impediment. Accessed 14 Apr. 2024.

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