Botox treatment

Spasmodic dysphonia (SD) is a larynx dystonia. There are several variations and combinations of larynx dystonia, such as adductor spasmodic and abductor spasmodic dysphonia. There are also combinations with laryngeal and voice tremor.

In the most common variant, speech is intermittently tense and arduous.

Treatment technique

During botox treatment, a small amount of botulinum toxin is injected directly into the laryngeal muscles. EMG registration via the injection needle is used during the injection to find a good position in the muscles. This treatment is usually bilateral. For adductor SD, the injection is in the thyroarytenoid muscles.

The effect of the botulinum toxin lasts for a limited period (three months). It is up to the patient to decide whether and when a new treatment is required. 


Page revised Wednesday, May 11, 2011

Content manager: Anders Westerborn

Published by Anita Pettersson

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