Ringing
Buzzing
Roaring
Clicking
Hissing
Damage to the middle or inner ear
Damage to the eardrums or the tiny bones in the middle ear
Tumours in the ear or on the auditory nerve
Exposure to very loud sounds on a regular basis
Side effects of certain medications such as aspirin, diuretic medications, antimalarial drugs, antibiotics, and cancer drugs
Age-related hearing loss
Muscle spasms in the middle ear
Head and neck injuries
Excessive earwax