About spasmodic dysphonia

If your tight, strangled, broken, whispery, or otherwise “not quite right” voice has been diagnosed as spasmodic dysphonia (SD), this website will provide a wealth of information on the disorder.

Spasmodic dysphonia belongs to a family of neurological disorders called dystonias. A dystonia is a movement disorder that causes muscles to contract and spasm involuntarily. SD can also be referred to as laryngeal dystonia. Dystonias generally fall into the following categories:

  • Generalized which means they affect the entire body.
  • Focal which means they affect only a specific area of the body or group of muscles.

Spasmodic dysphonia is a task-specific, focal dystonia, meaning that the muscles spasm only when they are used for particular actions and not when they are at rest.  

Spasmodic dysphonia will not impact your cognitive capabilities and it does not affect life expectancy.

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