The Effect of Vocal Rest Versus Vocalization Following Xeomin® Injections in Spasmodic Dysphonia

The Effect of Vocal Rest Versus Vocalization Following Xeomin® Injections in Spasmodic Dysphonia

This study will compare the effects of vocal rest versus continuous vocalization for one hour immediately following botulinum toxin injections for adductor spasmodic dysphonia.

Inclusion Criteria:

• Diagnosed with adductor spasmodic dysphonia (ADSD) by an experienced neurologist and otolaryngologist. ADSD patients who have been stabilized on their treatment dose for at least 2 treatment cycles.

Exclusion Criteria:

• Diagnosed with another neurological disorder that is combined with ADSD (i.e. Parkinson's disease and ADSD). Previous history of an additional vocal pathology (i.e. vocal polps, vocal nodules, unilateral vocal fold paralysis, etc.)