Keywords

Essential voice tremor, botulinum toxin A

Abstract

Summary: The purpose of this study was to evaluate the effects of bilateral botulinum toxin injection into the thyroarytenoid (TA) muscles of a patient with essential voice tremor. Acoustic and aerodynamic data were collected weekly over a 16-week period. Flexible nasolaryngoscopy was performed prior to injection and 2, 6, 10, and 16 weeks post injection. Perceptual analyses of the acoustic and nasolaryngoscopic data were performed. A reduction in frequency tremor and, to a lesser extent, amplitude tremor was observed during the 1-10 week period. Estimated laryngeal resistance decreased after injection and was accompanied in perceptual measures by a reduction in vocal effort, laryngeal tremor, and supraglottic hyperfunction. Essential voice tremor can be successfully attenuated with bilateral percutaneous injection of botulinum toxin A into the vocalis muscle.

Original Publication Citation

Warrick, P., Dromey, C., Irish, J. & Durkin, L. (2000). The treatment of essential voice tremor with botulinum toxin A: A longitudinal case report. Journal of Voice, 14, 410-421

Document Type

Peer-Reviewed Article

Publication Date

2000

Publisher

Journal of Voice

Language

English

College

David O. McKay School of Education

Department

Communication Disorders

University Standing at Time of Publication

Full Professor

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