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Laryngeal myofascial pain syndrome as a new diagnostic entity of dysphonia

Title
Laryngeal myofascial pain syndrome as a new diagnostic entity of dysphonia
Authors
Jung, Soo YeonPark, Hae SangBae, HasukYoo, Jeong HyunPark, Hyung JunPark, Kee DukKim, Han SuChung, Sung Mm
Ewha Authors
정성민박기덕유정현김한수배하석박형준정수연
SCOPUS Author ID
정성민scopus; 박기덕scopus; 유정현scopus; 김한수scopus; 배하석scopus; 박형준scopusscopus; 정수연scopus
Issue Date
2017
Journal Title
AURIS NASUS LARYNX
ISSN
0385-8146JCR Link1879-1476JCR Link
Citation
vol. 44, no. 2, pp. 182 - 187
Keywords
UltrasonographyElectromyographyMyofascial pain syndrome
Publisher
ELSEVIER SCI LTD
Indexed
SCIE; SCOPUS WOS scopus
Abstract
Objective: To consider the feasibility of diagnosing intrinsic laryngeal muscle myofascial pain syndrome (MPS) in dysphonic patients who demonstrated immediate symptom and stroboscopic finding improvement after laryngeal electromyography (LEMG) without further treatment. Methods: A chart review of patients who showed subtle vocal fold movement abnormalities on a stroboscopic examination and underwent ultrasonography (US)-guided LEMG was performed. Patients with vocal fold paralysis, mucosal lesions, spasmodic dysphonia, and vocal tremor on stroboscopic examination were excluded. Among them, patients with normal EMG findings were included in this study. The patients who reported voice symptom improvement after LEMG without further treatment were placed in laryngeal MPS (LMPS) group and the other patients were placed in non-laryngeal MPS (non-MPS) group. Predisposing factors, voice symptom, symptom-duration, and stroboscopic findings of these patients were reviewed. Results: Among the 16 patients, LEMG findings were normal, five (31%) were included in the LMPS group and the other 11 patients (69%) were included in the non-MPS group. All LMPS group patients had a history of voice abuse and reported odynophonia. The Korean Voice Handicap Index 10 score decreased significantly after US -guided LEMG without additional treatment in the LMPS group. The stroboscopic findings revealed that vocal fold hypomobility was the most common finding in the LMPS group, and two patients showed a muscle tension dysphonia pattern. The LMPS groups showed improvement of vocal fold mobility on 1-week stroboscopic evaluation. Conclusion: LMPS is a potential diagnosis for patients with vocal fold hypomobility finding on stroboscopic findings but with normal EMG results. Diagnosis of LMPS could be considered in patients who showed symptom and vocal fold movement improvement after LEMG. (C) 2016 Elsevier Ireland Ltd. All rights reserved.
DOI
10.1016/j.an1.2016.05.001
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의학전문대학원 > 의학과 > Journal papers
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