Botox injections help restore the voices of people with spasmodic dysphonia, a voice disorder caused by vocal cord muscle spasms, according to a University of Michigan study.

The three-year study included 36 people with spasmodic dysphonia. They were treated with Botox injections up to six times. All the patients showed dramatic improvement on the voice-related quality of life (V-RQOL) scale.

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The findings appear in the April issue of the Archives of Otolaryngology, Head and Neck Surgery.

This is the first study to offer long-term data on how repeated Botox injections affect the voices of people with spasmodic dysphonia, along with their emotional, social and physical functioning.

For years, Botox has been used off-label to treat people with spasmodic dysphonia. This rare and often-misdiagnosed disorder causes a person's voice to sound strained, broken or breathy. Botox injections relax the vocal cord muscles. - (HealthDayNews)

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