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KMID : 1004320140250020075
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Journal of the Korean Society of Logopedics and Phoniatrics
2014 Volume.25 No. 2 p.75 ~ p.78
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Pathophysiology of Functional Dysphonia
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Jin Sung-Min
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Abstract
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Functional dysphonia refers to a voice disturbance that occurs in the absence of structural or neurologic laryngeal pathological characteristics. Poorly regulated activity of the intrinsic and extrinsic laryngeal muscles is cited as the proximal cause of functional dysphonia (FD). Recently, the term functional dysphonia has been replaced in some clinical circles by diagnostic label muscle tension dysphonia (MTD), which serves to highlight excess, dysregulated, or imbalanced activity of the intrinsic and extrinsic laryngeal muscles as proximal cause of the observed dysphonia. And recent research evidence points to specific personality traits as important contributors to its development and maintenance. However, the origin of this dysregulated laryngeal muscle activity has not been fully elucidated. Further research is needed to better understand the pathogenesis of functional dysphonia, and factors contributing to its successful management.
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KEYWORD
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Functional dysphonia, Muscle tension dysphonia
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