High frequency hearing loss is the first indication that it should be a form of sensorineural deafness. If it occurs within one month, it is diagnosed as sudden deafness in sensorineural deafness, and should be treated early with early medication intervention, and some cases can be fully recovered. If recovery is not possible, after stabilization, it is called sensorineural deafness, and only hearing aids can be considered to restore hearing. Noise deafness is diagnosed when both ears experience high frequency hearing loss and are exposed to noise at the same time. If the simultaneous hearing loss is due to the gradual decline in hearing with age, it can also be diagnosed as senile deafness.