Diseases & Conditions


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Spasmodic Dysphonia


Synonyms of Spasmodic Dysphonia
  • CSD (Chronic Spasmodic Dysphonia)
  • Dysphonia Spastica
  • Laryngeal Dystonia
  • SD
  • Spastic Dysphonia

Disorder Subdivisions

  • Abductor Spasmodic Dysphonia
  • Adductor Spasmodic Dysphonia


General Discussion
Spasmodic dysphonia is a voice disorder characterized by momentary periods of uncontrolled vocal spasms, tightness in the throat, and/or recurrent hoarseness. At certain times, affected individuals must make a conscious effort to speak. The most frequent sign of this disorder is a sudden, momentary lapse or interruption of the voice. Spasmodic dysphonia is a form of dystonia, a group of neurological movement disorders characterized by involuntary muscle spasms.

There are two types of spasmodic dysphonia: Abductor spasmodic dysphonia and the more common adductor spasmodic dysphonia. The cause of spasmodic dysphonia is not known.
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Organizations related to Spasmodic Dysphonia
  • Dystonia Medical Research Foundation
    1 East Wacker Drive
    Chicago IL 60601-1905
    Phone #: 312-755-0198
    800 #: 800-377-3978
    e-mail: dystonia@dystonia-foundation.org
    Home page: http://www.dystonia-foundation.org
  • Dystonia Society
    89 Albert Embankment
    London Intl SE1 7TP
    Phone #: 084-5 4-58 6211
    800 #: 084-5 4-58 6322
    e-mail: info@dystonia.org.uk
    Home page: http://www.dystonia.org.uk
  • NIH/National Institute on Deafness and Other Communication Disorders (Balance)
    National Temporal Bone, Hearing
    Boston MA 02114-3096
    Phone #: --
    800 #: 800-822-1327
    e-mail: TBRegistry@meei.harvard.edu
    Home page: http://www.tbregistry.org
  • National Spasmodic Dysphonia Association
    300 Park Boulevard
    Itasca IL 60143
    Phone #: N/A
    800 #: 800-795-6732
    e-mail: nsda@dysphonia.org
    Home page: http://www.dysphonia.org
  • Spasmodic Dysphonia Support Group
    8 Corona Avenue
    New South Wales Intl 2069
    Phone #: 61 -294- 112 424
    800 #: --
    e-mail: dennist@agsm.unsw.edu.au
    Home page: N/A
  • WE MOVE (Worldwide Education and Awareness for Movement Disorders)
    204 West 84th Street
    New York NY 10024
    Phone #: 212-875-8312
    800 #: N/A
    e-mail: wemove@wemove.org
    Home page: http://www.wemove.org



For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders, Inc. ? (NORD). A copy of the complete report can be obtained for a small fee by visiting the NORD website. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational treatments (if available), and references from medical literature. For a full-text version of this topic, see http://www.rarediseases.org/search/rdblist.html

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