Botox Injection for the Management of Spasmodic Dysphonia

Choi, Hong-Shik

J Korean Soc Laryngol Phoniatr Logop > Volume 23(2); 2012 > Article

Journal of The Korean Society of Laryngology, Phoniatrics and Logopedics 2012;23(2): 99-103.

연축성 발성장애(Spasmodic Dysphonia)에 대한 보톡스 주입치료

최홍식

연세대학교 의과대학 강남세브란스병원 이비인후과학교실, 후두음성의학연구소

Botox Injection for the Management of Spasmodic Dysphonia

Hong-Shik Choi

Department of Otorhinolaryngology, Gangnam Severance Hospital, Yonsei University College of Medicine, The Institute of Laryngology & Phoniatrics

ABSTRACT

Spasmodic dysphonia is a chronic, focal, movement-induced, action-specific dystonia of the laryngeal musculature during speech. It can have a profound effect on quality of life, severely limiting people's communication, especially via telephone and in noisy backgrounds. Spasmodic dysphonia (SD) is usually of the adductor type characterized by glottic contractions causing tightness and voice breaks with forced-strangled voice, but it may also be abductor type or, much less commonly, mixed. Treatment options for adductor spasmodic dysphonia (ADSD) include voice therapy, surgical procedures, and botulinum toxin injections (Botox). The use of Botox injected into the laryngeal muscles remains the "gold standard" treatment for reducing the vocal symptoms of ADSD and Botox induces a temporary paresis of the laryngeal muscles and provides short-term relief of symptoms. Repeated injections of the laryngeal muscles, generally every 3-4 months, are required for continuous relief of symptoms. Improvement in vocal function has been reported after use of Botox injections, though a completely normal voice is rarely achieved. In this hospital, 1,030 patients have been enrolled for Botox injection therapy so far (May, 2012). In this review article, I'd like to present my personal experience of management of spasmodic dysphonia mainly by Botox injection.

KEY WORDS： Spasmodic dysphonia;Botox;Adductor spasmodic dysphonia;

중심 단어： 연축성 발성장애;보톡스;음성진전;후두근전도;