Hearing loss. Most people who have tinnitus also have some kind of hearing loss.
Loud noise. Exposure to loud noise can cause permanent hearing loss and tinnitus. Continued exposure can make the tinnitus and hearing loss get worse.
Medicine. More than 200 medicines, including aspirin, can cause tinnitus. If you have tinnitus and you take medicine, ask your doctor or pharmacist whether your medicine could be involved.
Other potential causes. Allergies, tumors, problems in the heart and blood vessels, jaws, and neck can cause tinnitus.