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Spastic Dysphonia

  • Nobuhiko IsshikiAffiliated withDepartment of Plastic Surgery, School of Medicine, Kyoto University

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Spastic dysphonia, first reported by Traube in 187120, has been controversial in every aspect—definition, etiology, symptoms, diagnostic basis, and treatment. The diagnosis is usually made auditorily on the basis of a strange strenuous manner of phonation. It has been described as strained, harsh, tight, strangulated, tremulous, squeezed voice, overpressure, vocal arrest, etc. Tentatively, it may be defined as dysphonia caused by spasm or excessive contraction of the intrinsic laryngeal muscle. It is often accompanied by spasm of the other muscles in the neck and oropharyngeal region.