Source:http://linkedlifedata.com/resource/umls/id/C0518179
NCI: 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.,NCI: A disorder characterized by a change in the sound and/or speed of the voice.