There are several reasons for sudden hearing loss, some are due to cerumen embolism in the ear, that is, earwax blockage causes hearing loss belongs to the external ear canal problems, you can go to the hospital for the appropriate treatment, ear cerumen removal can be. It may be due to otitis media, middle ear effusion, which is often seen after a cold with nasal congestion, runny nose and concurrent otitis media, which requires anti-inflammatory treatment, and can be treated with nose spray. Another common cause of sudden deafness is inner ear pathology, which is caused by the blockage of blood vessels in the inner ear, resulting in insufficient blood supply to the inner ear and damage to the auditory nerve, resulting in hearing loss, which is manifested as sensorineural hearing loss and requires active treatment.