Spasmodic Dysphonia


Spasmodic Dysphonia (SD) is a neurogenic voice disorder of unknown etiology.  There are two general types of Spasmodic Dysphonia, adductor spasmodic dysphonia (ADSD) and abductor spasmodic dysphonia (ABSD).    At present, SD is classified as a focal dystonia alongside such disorders as torticollis, blepharospasm, oral mandibular dystonia, and writer’s cramp.   Symptoms of ADSD include mild to profound “strain and strangle” sensations during voiced speech tasks that, in the most severe form, are physically and psychologically debilitating.  In ADSD, the voice changes may also be characterized by phonatory (voice) breaks, and increased effort to speak. In ABSD the voice is characterized as a period of breathiness in the middle of a word typically on the vowel.   Persons with ADSD and ABSD generally report a wide range of affective responses including reduced participation and withdrawal from social and occupational activities, difficulty obtaining or maintaining employment, depression, anxiety, family disruption, and occasionally thoughts of suicide.  Reported physical symptoms include physical discomfort, breathlessness, constriction in the chest and throat, and fatigue after speaking to the point of exhaustion.
            
The assessment for spasmodic dysphonia is completed with a multidisciplinary effort including that of a laryngologist, neurologist, and speech pathologist .  The assessment generally includes a visual examination of the larynx during conversational speech and may include other physiologic measures of the laryngeal muscles with electromyography (EMG). 

Voice Changes Following Botox Injection


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Voice Sample 1


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Voice Sample 2


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Voice Sample 3


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Voice Sample 4


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Spasmodic Dysphonia

  • What is it?  What is it not?

http://www.dysphonia.org/spasmodic/

  • Frequently asked questions?

http://www.dysphonia.org/faq.asp?nav=spa#spa

http://www.dysphonia.org/spasmodic/related.asp

http://www.dysphonia.org/faq.asp?nav=pub#pub

  • Symptoms

http://www.dysphonia.org/spasmodic/symptons.asp

  • Diagnosis

http://www.dysphonia.org/spasmodic/diagnosis.asp

  • Testimonials

http://www.dysphonia.org/support/personal.asp?nav=sup#q2

  • Other links National ENT of Health and Academy of Neurology

http://www.dysphonia.org/links.asp?nav=spa#spa

  • SD Bulletin Board

http://www.dysphonia-bb.org/forums/sd/

  • Online Support Group

http://www.dysphonia.org/support/online.asp

  • Support Groups
http://www.dysphonia.org/support/area.asp