Sudden deafness, referred to as violent deafness or sudden deafness, is a sudden onset of sensorineural deafness of unknown cause, manifested as a group of symptoms of acute inner ear deafness of unknown etiology. The hearing loss occurs suddenly and may be accompanied by tinnitus and vertigo, but there is no damage to the brain nerve other than the damage to the auditory nerve. Main clinical manifestations: 1. Symptoms: sudden onset of deafness, tinnitus, vertigo, dullness, peri-aural numbness, auditory hypersensitivity, ear pain, sound distortion, etc. 2. Examination: pure tone hearing curve: flat type, total deafness, island, high frequency drop type, low frequency drop type, medium frequency drop type (valley type), etc. Pay attention to identify other diseases: 1, Meniere’s disease: hearing fluctuations, recurrent vertigo, short vertigo episodes, and relatively mild hearing loss in the first episode. 2.Auditory neuroma. 3, Functional deafness. 4. Autoimmune diseases of the inner ear. Treatment of sudden deafness: You must see a doctor as early as possible when you find that you have problems hearing. The earlier you start treatment, the faster and better your hearing will recover and the greater the possibility of cure. Older people who find themselves with hearing loss should tell their children as early as possible and seek medical attention as soon as possible. The outcome of sudden deafness in older patients is worse than in younger people, so it is more important to hurry up the treatment and at the same time must treat older people for the best outcome. During the treatment of sudden deafness, it is important to take good rest, avoid colds, avoid noise stimulation, avoid mental stimulation and cooperate with the doctor for serious treatment.