Sudden deafness, how long the hearing slowly recovered, need to be judged according to the specific condition, the cause of the disease. If the hearing loss is mild and the treatment is timely, it will usually improve in 2 to 3 days; if the symptoms are more serious and the treatment is not timely, it may gradually recover in about two weeks; some patients’ hearing loss is permanent and irreversible. Sudden deafness is a relatively common clinical phenomenon. During the onset of the disease, patients may experience tinnitus, dizziness, nausea and vomiting, and hearing loss. If the onset of the disease is relatively short, timely treatment and medication within a week after the onset of the disease, 2-3 days will gradually recover, and normal hearing can be restored within a short period of time. If more than a week do not receive timely treatment, the effect will be greatly reduced, some need about 2 weeks or can gradually recover, some patients need a longer time or even can not be recovered. Once the hearing abnormality occurs, you need to go to the hospital in time to get a clear diagnosis, according to the cause and symptoms of standardized medication and treatment.