Tuberc Respir Dis > Volume 43(3); 1996 > Article
Tuberculosis and Respiratory Diseases 1996;43(3):449-454.
DOI: https://doi.org/10.4046/trd.1996.43.3.449    Published online June 1, 1996.
A Case of Functional Upper Airway Obstruction Due To Vocal Cord Dysfunction.
Jung Kyung Suh, Sang Yeub Lee, Sang Hwa Lee, Sang Myun Park, Jae Youn Cho, Jae Jeong Shim, Kwang Ho In, Kyung Ho Kang, Se Hwa Yoo
Department of Internal Medicine, College of Medicine, Korea University, Seoul, Korea.
Abstract
Functional upper airway obstruction due to vocal cord dysfunction is being increasingly recognized and has been variously described as "Munchausen's stridor", "Emotional laryngeal wheezing", "Nervous asthma". It's features are symptoms of acute reversible recurrent dyspnea associated with an inspiratory stridor, normal anatomy of the upper airway, demonstration of variable severe exthrathoracic upper airways obstruction with pathologic adduction of the vocal cord at bronchoscopy. The patients with this condition are frequently misdiagnosed as asthma and the diagnosis is often delayed. So they can present a serious medical problem and are exposed to the complication of treatment and investigation. We report a case of functional upper airway obstruction due to vocal cord dysfunction who showed paradoxical vocal cord motion at bronchoscopy and typical features of variable exthrathoracic obstruction on Flow-volume loop during a symptomatic period.
Key Words: Functional upper airway obstruction, Vocal cord dysfunction


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