Spasmodic dysphonia: Difference between revisions
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{{Infobox medical condition | |||
| name = Spasmodic dysphonia | |||
| image = [[File:Vocal_fold_animated.gif|alt=Animation of vocal fold movement]] | |||
| image_size = 250px | |||
| alt = Animation of vocal fold movement | |||
| caption = Animation showing the movement of vocal folds | |||
| field = [[Otolaryngology]] | |||
| synonyms = Laryngeal dystonia | |||
| symptoms = [[Voice]] breaks, [[hoarseness]], strained or strangled voice | |||
| onset = Typically [[adulthood]] | |||
| duration = [[Chronic (medicine)|Chronic]] | |||
| causes = [[Neurological disorder]] | |||
| risks = [[Genetic predisposition]], [[stress]] | |||
| diagnosis = [[Laryngoscopy]], [[voice analysis]] | |||
| differential = [[Muscle tension dysphonia]], [[vocal fold paralysis]] | |||
| treatment = [[Botulinum toxin]] injections, [[voice therapy]] | |||
| medication = [[Botulinum toxin]] | |||
| frequency = Rare | |||
}} | |||
{{DISPLAYTITLE:Spasmodic Dysphonia}} | {{DISPLAYTITLE:Spasmodic Dysphonia}} | ||
'''Spasmodic dysphonia''' is a chronic voice disorder characterized by involuntary spasms of the [[larynx|laryngeal]] muscles, which cause interruptions in speech and affect the voice quality. It is a type of [[dystonia]], a neurological movement disorder. | '''Spasmodic dysphonia''' is a chronic voice disorder characterized by involuntary spasms of the [[larynx|laryngeal]] muscles, which cause interruptions in speech and affect the voice quality. It is a type of [[dystonia]], a neurological movement disorder. | ||
== Types == | == Types == | ||
Spasmodic dysphonia is classified into three main types based on the muscles affected: | Spasmodic dysphonia is classified into three main types based on the muscles affected: | ||
=== Adductor Spasmodic Dysphonia === | === Adductor Spasmodic Dysphonia === | ||
This is the most common form, where the muscles that bring the vocal folds together (adductors) spasm, causing the voice to sound strained or strangled. | This is the most common form, where the muscles that bring the vocal folds together (adductors) spasm, causing the voice to sound strained or strangled. | ||
=== Abductor Spasmodic Dysphonia === | === Abductor Spasmodic Dysphonia === | ||
In this less common form, the muscles that separate the vocal folds (abductors) spasm, resulting in a breathy or whispery voice. | In this less common form, the muscles that separate the vocal folds (abductors) spasm, resulting in a breathy or whispery voice. | ||
=== Mixed Spasmodic Dysphonia === | === Mixed Spasmodic Dysphonia === | ||
This rare form involves both adductor and abductor spasms, leading to a combination of voice symptoms. | This rare form involves both adductor and abductor spasms, leading to a combination of voice symptoms. | ||
== Symptoms == | == Symptoms == | ||
The primary symptom of spasmodic dysphonia is a voice that is interrupted by involuntary muscle movements. This can manifest as: | The primary symptom of spasmodic dysphonia is a voice that is interrupted by involuntary muscle movements. This can manifest as: | ||
| Line 23: | Line 35: | ||
* Intermittent breaks in speech | * Intermittent breaks in speech | ||
* Tremor in the voice | * Tremor in the voice | ||
== Causes == | == Causes == | ||
The exact cause of spasmodic dysphonia is unknown, but it is believed to involve abnormal functioning in the [[basal ganglia]], a part of the brain that helps control movement. It may have a genetic component and can be triggered by stress or upper respiratory infections. | The exact cause of spasmodic dysphonia is unknown, but it is believed to involve abnormal functioning in the [[basal ganglia]], a part of the brain that helps control movement. It may have a genetic component and can be triggered by stress or upper respiratory infections. | ||
== Diagnosis == | == Diagnosis == | ||
Diagnosis of spasmodic dysphonia is typically made by a team of specialists, including an [[otolaryngologist]], a [[neurologist]], and a speech-language pathologist. The evaluation may include: | Diagnosis of spasmodic dysphonia is typically made by a team of specialists, including an [[otolaryngologist]], a [[neurologist]], and a speech-language pathologist. The evaluation may include: | ||
| Line 32: | Line 42: | ||
* Voice analysis | * Voice analysis | ||
* Neurological examination | * Neurological examination | ||
== Treatment == | == Treatment == | ||
There is no cure for spasmodic dysphonia, but several treatments can help manage the symptoms: | There is no cure for spasmodic dysphonia, but several treatments can help manage the symptoms: | ||
=== Botulinum Toxin Injections === | === Botulinum Toxin Injections === | ||
[[Botulinum toxin]] injections into the affected muscles are the most common treatment, providing temporary relief by weakening the muscles and reducing spasms. | [[Botulinum toxin]] injections into the affected muscles are the most common treatment, providing temporary relief by weakening the muscles and reducing spasms. | ||
=== Voice Therapy === | === Voice Therapy === | ||
[[Voice therapy]] with a speech-language pathologist can help patients develop strategies to improve voice control and reduce strain. | [[Voice therapy]] with a speech-language pathologist can help patients develop strategies to improve voice control and reduce strain. | ||
=== Surgery === | === Surgery === | ||
In some cases, surgical interventions such as selective laryngeal denervation-reinnervation may be considered. | In some cases, surgical interventions such as selective laryngeal denervation-reinnervation may be considered. | ||
== Prognosis == | == Prognosis == | ||
Spasmodic dysphonia is a chronic condition that can significantly impact quality of life. While treatments can help manage symptoms, ongoing therapy is often necessary. | Spasmodic dysphonia is a chronic condition that can significantly impact quality of life. While treatments can help manage symptoms, ongoing therapy is often necessary. | ||
== See Also == | |||
== | |||
* [[Dystonia]] | * [[Dystonia]] | ||
* [[Larynx]] | * [[Larynx]] | ||
* [[Voice therapy]] | * [[Voice therapy]] | ||
[[Category:Voice disorders]] | [[Category:Voice disorders]] | ||
[[Category:Neurological disorders]] | [[Category:Neurological disorders]] | ||
Latest revision as of 05:56, 6 April 2025
Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
W8MD's medical weight loss NYC, sleep center NYC
Philadelphia medical weight loss and Philadelphia sleep clinics
| Spasmodic dysphonia | |
|---|---|
| |
| Synonyms | Laryngeal dystonia |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Voice breaks, hoarseness, strained or strangled voice |
| Complications | N/A |
| Onset | Typically adulthood |
| Duration | Chronic |
| Types | N/A |
| Causes | Neurological disorder |
| Risks | Genetic predisposition, stress |
| Diagnosis | Laryngoscopy, voice analysis |
| Differential diagnosis | Muscle tension dysphonia, vocal fold paralysis |
| Prevention | N/A |
| Treatment | Botulinum toxin injections, voice therapy |
| Medication | Botulinum toxin |
| Prognosis | N/A |
| Frequency | Rare |
| Deaths | N/A |
Spasmodic dysphonia is a chronic voice disorder characterized by involuntary spasms of the laryngeal muscles, which cause interruptions in speech and affect the voice quality. It is a type of dystonia, a neurological movement disorder.
Types[edit]
Spasmodic dysphonia is classified into three main types based on the muscles affected:
Adductor Spasmodic Dysphonia[edit]
This is the most common form, where the muscles that bring the vocal folds together (adductors) spasm, causing the voice to sound strained or strangled.
Abductor Spasmodic Dysphonia[edit]
In this less common form, the muscles that separate the vocal folds (abductors) spasm, resulting in a breathy or whispery voice.
Mixed Spasmodic Dysphonia[edit]
This rare form involves both adductor and abductor spasms, leading to a combination of voice symptoms.
Symptoms[edit]
The primary symptom of spasmodic dysphonia is a voice that is interrupted by involuntary muscle movements. This can manifest as:
- Strained or strangled voice
- Breathy or whispery voice
- Intermittent breaks in speech
- Tremor in the voice
Causes[edit]
The exact cause of spasmodic dysphonia is unknown, but it is believed to involve abnormal functioning in the basal ganglia, a part of the brain that helps control movement. It may have a genetic component and can be triggered by stress or upper respiratory infections.
Diagnosis[edit]
Diagnosis of spasmodic dysphonia is typically made by a team of specialists, including an otolaryngologist, a neurologist, and a speech-language pathologist. The evaluation may include:
- Laryngoscopy to visualize the vocal folds
- Voice analysis
- Neurological examination
Treatment[edit]
There is no cure for spasmodic dysphonia, but several treatments can help manage the symptoms:
Botulinum Toxin Injections[edit]
Botulinum toxin injections into the affected muscles are the most common treatment, providing temporary relief by weakening the muscles and reducing spasms.
Voice Therapy[edit]
Voice therapy with a speech-language pathologist can help patients develop strategies to improve voice control and reduce strain.
Surgery[edit]
In some cases, surgical interventions such as selective laryngeal denervation-reinnervation may be considered.
Prognosis[edit]
Spasmodic dysphonia is a chronic condition that can significantly impact quality of life. While treatments can help manage symptoms, ongoing therapy is often necessary.
