Voice Alteration

**Semantic type:** Finding

**Definition:** Change in the sound and/or speed of the voice. Causes include laryngeal polyp, laryngitis, laryngeal carcinoma, throat carcinoma, Parkinson's disease, multiple sclerosis, stroke, hypothyroidism, oral surgery, tracheostomy, tracheal injury, and laryngeal injury.

**Synonyms:** - Change in Voice - Voice alteration - Voice alteration