Tinnitus (tin-NY-tus) is the perception sound in the ear(s). Tinnitus affects about 15 to 20 percent of the population. Tinnitus symptoms may include:
The noise may vary in pitch from a low roar to a high squeal, and you may hear it in one or both ears. In some cases, the sound can be so loud it can interfere with your ability to concentrate or hear external sound. Tinnitus may be present all the time, or it may come and go.