Acoustic neuritis is a disorder in which the auditory nerve is affected. The auditory nerve carries impulses from the inner ear (labyrinth) to the brain. Residents of large industrial cities are more likely to suffer from this disease, which is caused by constant noise. Neuritis can be acute or chronic. The first sign of auditory neuritis is hearing loss or noise in the ear. In this case, the decrease is of varying degrees of intensity, up to complete deafness, which occurs in a few hours.