New thinking about tinnitus

Tinnitus is widely believed to be caused by hearing loss. But that theory hasn’t explained the cause of the problem for people with normal hearing tests who still have tinnitus. Increasing evidence suggests that some of these people have “hidden” hearing loss: damage to the auditory nerve—which carries sound signals from the ear to the brain—that isn’t picked up by conventional tests. The evidence offers hope that if perhaps one day auditory nerve fibers can be regenerated, it might help reduce the perception of tinnitus.