tinnitus

Definition / meaning of tinnitus

A disorder in which a person hears noises such as buzzing, ringing, clicking, or the sound of a pulse, when no outside sound is causing them. Tinnitus may have many different causes, and may be a symptom of another disease or condition. It may be caused by certain tumors and anticancer drugs.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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