Tinnitus is the perception of noise or ringing in the ears, a common condition affecting about 15% to 20% of people. It is not a condition itself but rather a symptom of an underlying condition, such as age-related hearing loss, ear injury, or a circulatory system disorder. Tinnitus can 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. Despite extensive research, tinnitus remains a poorly understood condition with no cure, but there are several treatments available to help manage its symptoms (“Tinnitus,” Mayo Clinic).
Source: Tinnitus, Mayo Clinic