Spasmodic dysphonia (SD) is a neurological disorder that affects the larynx. This malady is characterized by spasm of the vocal cords that results in a strained or breathy quality to the voice. There are two types of SD: the adductor type where the cords spasm together producing a strained voice (this is most common) and the abductor type where the cords spasm in an open position producing a more breathy quality to the voice. In order to be diagnosed with SD a patient will first need evaluation by an ENT and then likely will require referral to a speech and language pathologist for a special study called a stroboscopy to confirm the diagnosis. Both types of SD are treated with injection of botulinum toxin (Botox®) to specific areas of the voice box. Botox® is a widely used medical toxin that produces muscle paralysis. When placed in specific areas in specific amounts in the voice box the major symptoms of SD can be relieved. Botox® typically last approximately 6 months at which time another injection can be performed. These injections are typically done under a short anesthetic done as an outpatient.
If you have questions about SD or if you feel you may have SD please give us a call.
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