Sudden deafness, also known as idiopathic blast deafness, is referred to as sudden deafness. It is the peak of deafness in an instant or within a maximum of no more than 48 hours. It is most often seen in adults and is slightly more common in women than in men. The onset is sudden and there is often no apparent conscious cause before the onset. It also occurs in some patients after a cold, overexertion and mood swings. The majority of patients are unilaterally deaf, and bilateral deafness is rare. According to clinical analysis, sudden deafness is related to two conditions: 1. A vascular factor: that is, some kind of cause of pathological changes in the inner ear blood vessels, such as cold and heat, fatigue, mental stimulation, allergy or endocrine disorders, can cause disturbance of the vegetative nerves. In this way, insufficient blood supply to the inner ear leads to pathological changes such as vascular spasm, edema, hemorrhage, thrombosis, etc., and finally the cortical apparatus is damaged and sudden deafness occurs. 2. Another factor is viral infection: Infections such as influenza, mumps, herpes zoster, rubella, measles, and adenovirus can cause damage to the cortical apparatus. Therefore, sudden deafness is not damage to the conductive sound route, but mainly damage to the sound-sensitive part of the inner ear. In this case, although sound (sound waves) is transmitted, it does not cause a response from the cortical apparatus, which is the sound-sensitive part, and this is called neurological deafness. Therefore, sudden deafness is a type of neurological deafness. The main symptom of sudden deafness is hearing loss, which varies in severity. Tinnitus is a concomitant symptom, mostly low-pitched tinnitus. It is sometimes accompanied by a feeling of stuffiness and fullness in the ear. More than half of the people with sudden deafness have varying degrees of vertigo, the degree and duration of which is usually no more than a few days and may take several weeks to disappear completely. Sudden deafness can have very good results if treated aggressively, especially early. You should go to the hospital immediately after the onset of the disease and have the spirit of fighting for time. According to statistics, about 80% of patients can be cured or partially recovered if treatment is started within a week after the onset of the disease. The longer the onset of the disease the worse the efficacy. There are reports from abroad, and said that more than a month hearing is basically set, treatment is meaningless. In the short term, those who do not see results are not necessarily unable to recover, so treatment should be adhered to a longer period of time, I also tend to the latter statement. Commonly used drugs are vasodilators and nerve nutrients, while the application of hormone therapy can achieve better results.