Tinnitus is a frequently reported symptom for audiology patients. It's commonly referred to as ringing in the ears, but it can be different sounds like buzzing, roaring, clicking, hissing or humming.
Tinnitus is the sensation or perception of sounds that other people can't hear, and it doesn't have an external source. It lasts longer than five minutes and occurs more than once per week.
According to the National Institute on Deafness and Other Communication Disorders, about 10%, or about 25 million, U.S. adults, have experienced tinnitus lasting at least five minutes in the past year.