Abductor laryngeal dystonia: A series treated with botulinum toxin

Andrew Blitzer, Mitchell F. Brin, Celia Stewart, Jonathan E. Aviv, Stanley Fahn

Research output: Contribution to journalArticlepeer-review


Abductor laryngeal dystonia (LD) is characterized by a hoarse voice quality which is broken up by breathy or whispered portions. Botulinum toxin injection (Botox) has been a safe and effective treatment for adductor laryngeal dystonia and is currently accepted medical therapy. As an extension of the established treatment program, in 1989 treatment of abductor LD was initiated. Thirty-two patients have been treated by sequential percutaneous electromyo-gram-guided (EMG) injections of the posterior cricoarytenoid (PCA) muscles. Most patients required treatment of both PCA muscles and improved to an average of 70% of normal voice. Patients who had a preexisting tremor, evidence of dystonia in other muscle groups, vocal tremor, or respiratory dysrhythmia had less improvement. Ten patients also required injection of the cricothyroid muscles and/or type I laryngoplasty.

Original languageEnglish (US)
Pages (from-to)163-167
Number of pages5
Issue number2
StatePublished - Feb 1992

ASJC Scopus subject areas

  • Otorhinolaryngology


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