Dysphonia - violation golosovali functions. Dysphonia is observed in diseases of the larynx, when the glottis when phonation is not completely closed (see Larynx, tumors of the larynx; Laryngitis). Dysphonia may be different degrees: from light osiplosti to full aphonia (see). Causes of disfonia determined at laryngoscopy (see). Treatment of disfonia aimed at elimination of the reasons causing it.