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| Voice Disorders Dysphonia | Phonation Disorders | Spastic Dysphonia | Flaccid Dysphonia | Hyperkinetic Dysphonia | Neurologic Adducter Spastic Dysphonia | Neurologic Voice Disorder | Organic Tremor Dysphonia | Spastic Dysphonia, Neurologic Adducter Disorders of voice pitch, loudness, or quality. Dysphonia refers to impaired utterance of sounds by the vocal folds. |