What is Spasmodic Dysphonia? Spasmodic Dysphonia is a chronic voice disorder of unknown origin that is characterized by excessive and involuntary contractions of the laryngeal muscles during speech. Spasmodic Dysponia (or alternatives to hormone replacement therapy after hysterectomy SD for brief) manifests as excessive glottic closure or extended lateralization of the vocal folds. Spasmodic Dysphonia is a neurological disorder. Medical science does not know what the cause of this disorder is or the way it occurs? There appears to be emerging analysis that points to a problem in the feedback loop between the mind and the organ with the dystonia-
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