by Mary Cresse
Spasmodic dysphonia (SD) is a voice disorder. It occurs when the muscles of the throat freeze or go into spasms. Words are strangled and strained or they don’t get out at all. Sounds are also distorted.
Main types of SD include:
The exact causes of SD are unknown. It is labeled as a disorder of the central nervous system. The areas of the brain that control these muscle movements are deep within the brain.
Factors increase your chance of developing SD include:
Symptoms of SD include:
Your doctor will ask about your symptoms and medical history. A physical exam will be done.
Images may be taken of your bodily structures. This can be done with:
Your doctor may refer you to a team of specialists, including:
Talk with your doctor about the best treatment plan for you. Treatment options include the following:
American Speech-Language-Hearing Association
National Spasmodic Dysphonia Association
Canadian Association of Speech Language Pathologists
Ontario Association for Speech-Language Pathologists and Audiologists
Daniilidou, P, Carding P, Wilson, J, Drinnan, M, Deary, V. Cognitive behavioral therapy for functional dysphonia. Annals of Otology, Rhinology & Laryngology. 2007;116:717-722.
Diagnosis. National Spasmodic Dysphonia Association website. Available at: http://www.dysphonia.org/diagnosis.php . Accessed May 20, 2013.
Dysphonia. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed/what.php . Updated January 16, 2013. Accessed May 20, 2013.
Spasmodic dysphonia. American Speech-Language-Hearing Association website. Available at: http://www.asha.or... . Accessed May 20, 2013.
Spasmodic dysphonia. National Institute on Deafness and Other Communicative Disorders website. Available at: http://www.nidcd.nih.gov/health/voice/Pages/spasdysp.aspx . Updated October 2010. Accessed May 20, 2013.
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