- Abductor spasmodic dysphonia (type)
- Mixed spasmodic dysphonia (type)
- Adductor spasmodic dysphonia (type)
- Laryngeal dyskinesia
Your QuestionMy mother has spasmodic dysphonia and I believe that I may have it too. How is this condition diagnosed? Is genetic testing available for this condition?
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Questions on this page
There are three different types of spasmodic dysphonia:
- Adductor spasmodic dysphonia (causes the vocal cords to slam together and stiffen)
- Abductor spasmodic dysphonia (causes the vocal cords to open)
- Mixed spasmodic dysphonia (causes the vocal cords to open and close)
In some cases, spasmodic dysphonia may run in families and is thought to be inherited. Research has identified a possible gene on chromosome 9 (9q32-34) that may contribute to the spasmodic dysphonia that is common to certain families. In some individuals the voice symptoms begin following an upper respiratory infection, injury to the larynx, a long period of voice use, or stress.
More details about the diagnosis of spasmodic dysphonia can be obtained by visiting the following link.
- Spasmodic Dysphonia. National Institute on Deafness and Other Communication Disorders (NIDCD). 2004; http://www.nidcd.nih.gov/health/voice/pages/spasdysp.aspx. Accessed 8/6/2010.
- Causes. National Spasmodic Dysphonia Association. http://www.dysphonia.org/spasmodic/causes.asp. Accessed 8/6/2010.
- Pitman MJ, Kamat AR, Bliznikas D, Baredes S. Spasmodic Dysphonia. eMedicine. 2009; http://emedicine.medscape.com/article/864079-overview. Accessed 8/6/2010.