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Case Reports
. 2013 Jun;123(6):1560-3.
doi: 10.1002/lary.23708. Epub 2013 May 10.

Sleep-related Adductor Laryngeal Dystonia Causing Sleep Apnea: A Sleep-Related Breathing Disorder Diagnosed With Sleep Endoscopy and Treated With Botulinum Toxin

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Case Reports

Sleep-related Adductor Laryngeal Dystonia Causing Sleep Apnea: A Sleep-Related Breathing Disorder Diagnosed With Sleep Endoscopy and Treated With Botulinum Toxin

Rosario Marchese-Ragona et al. Laryngoscope. .

Abstract

Obstructive sleep apnea syndrome (OSAS) is a chronic condition, characterized by recurrent episodes of upper airway collapse during sleep, which affects up to 5% of adults in the Western population. The muscle tone of the human body ordinarily relaxes during sleep, thus causing airway obstruction and leading to sleep apnea. We report a case of a 68-years old male in which dystonic closure of the larynx during sleep caused OSAS. The sleep endoscopy was crucial in establishing the diagnosis of laryngeal dystonia. A botulinum toxin injection in the vocal cord improved the OSAS. These findings define a novel sleep-related breathing disorder.

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