γγA person’s chronic stress, physical and mental overwork, shock, or sadness can affect the dynamic balance of the body’s neurohumoral regulation, resulting in insufficient blood supply to the inner ear, which can lead to sudden deafness. Sudden deafness can also be caused by excessive sound stimulation. Yin Shihua said, “Young people are the most likely to suffer from sudden deafness because they tend to be under the most stressful workload and their metabolic functions are slowly weakening. There are many candidates who suffer from ‘sudden deafness’ before various exams such as high school and graduate exams.”γγTo prevent sudden deafness, you should learn to release stress and pay attention to the combination of work and rest. Once you find yourself with symptoms such as tinnitus, vertigo, stuffy head and hearing loss, don’t be careless and rush to the hospital for examination and treatment.