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Spasmodic dysphonia (SD), a focal form of dystonia, is a neurological voice disorder that involves involuntary "spasms" of the vocal cords causing interruptions of speech and affecting the voice quality. SD can cause the voice to break up or to have a tight, strained, or strangled quality.
To listen to audio examples of Abductor Spasmodic Dysphonia or Adductor Spasmodic Dysphonia through RealPlayer click one of the links below.
 Adductor Spasmodic Dysphonia
Abductor Spasmodic Dysphonia
 Preview our new DVD: "Understanding Spasmodic Dysphonia"
 Spasmodic Dysphonia Grant Application
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The mission of the National Spasmodic Dysphonia Association is to advance medical research into the causes of and treatments for spasmodic dysphonia, promote physician and public awareness of the disorder, and provide support to those affected by spasmodic dysphonia.
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The design and implementation of the National Spasmodic Dysphonia Association website was made possible by a generous educational grant from the Allergan Foundation. Copyright ? 2000 National Spasmodic Dysphonia Association. Legal Disclaimer.
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