11/28/2025
Understanding Spasmodic Dysphonia
Spasmodic Dysphonia (SD) is a voice disorder caused by involuntary muscle spasms in the vocal cords, making speech sound strained, choppy, or breathy. There are two main types: adductor SD, which tightens the vocal cords too much, and abductor SD, which causes them to stay open longer than normal.
The condition is linked to nerve signals in the brain that misfire, similar to other movement-related disorders. Diagnosis can take time and usually involves both an ENT specialist and a speech-language pathologist.
Treatment often includes Botox injections, which help relax the vocal muscles and reduce spasms, leading to clearer and more controlled speech. While not a permanent fix, ongoing therapy can greatly improve comfort and confidence in communication.