Spasmodic Dysphonia

Spasmodic dysphonia is a voice disorder that is thought to occur at the level of the brainstem.

There are two different types:

The most common is adductor spasmodic dysphonia. In these patients, there is excessive closure of the vocal cords, resulting in a strained, strangled type of voice. This occurs all the time while they are speaking, but can be especially worse under times of stress, fatigue, or while using the telephone.

The other less common type is called abductor spasmodic dysphonia. This is characterized by frequent breathy breaks while people are speaking. Treatment of this can be accomplished in several different ways.

The most effective method currently is to use botulinum toxin to inject into the muscles, which are functioning abnormally in order to weaken them. This can bring about several months worth of benefit. Repeat therapy is usually necessary and is tailored to each individual patient.

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