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Spasmodic dysphoniaDefinition: Spasmodic dysphonia involves difficulty speaking because of repetitive or continuous spasms (dystonia) of the muscles that control the vocal cords.
Alternative Names: Dysphonia - spasmodic
Causes, incidence, and risk factors:
Symptoms: The excessive activity of the vocal cord muscles drives the vocal cords either too close or too far apart. This causes a hoarse or grating sounding voice, often with pauses (known as adductor dysphonia) or a whispery, breathy voice (abductor dysphonia), which is less common.
Treatment: Some people will find that the problem goes away when they sing or shout. Botulinum toxin (Botox) treatments may help.
Expectations (prognosis):
Calling your health care provider:
References: Goetz, CG, ed. Textbook of Clinical Neurology. 3rd ed. Philadelphia, PA: Saunders Elsevier; 2007: chap 13.
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| Review Date: 6/19/2008
Reviewed By: Sean O. Stitham, MD, private practice in Internal Medicine, Seattle, WA; Daniel B. Hoch, PhD, MD, Assistant Professor of Neurology, Harvard Medical School, Department of Neurology, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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