When a person suddenly goes deaf.
D001424:Bacterial Infections / Q000150:complications; D002528:Cerebellar Neoplasms / Q000150:complications; D002530:Cerebellopontine Angle; D006259:Craniocerebral Trauma / Q000150:complications; D003639:Hearing Loss, Sudden / Q000139:chemically induced / Q000209:etiology* / Q000628:therapy; D006801:Humans; D013590:Syphilis, Congenital / Q000150:complications