Any ear disorder can cause tinnitus. Some of the most common examples of these are given below:

• a disease in the inner ear - damage caused by extreme noise, age-dependent hearing reduction or Ménière's disease.
• an obstruction in the ear canal - a large amount of earwax or a foreign object.
• a pierced eardrum.
• a disease in the middle ear - inflammation of the middle ear.

Other Causes:

• high blood pressure
• some medications may causet tinnitus as a side effect, especially when the dose is exceeded, eg aspirin.

A rare Causes:

a benign tumor on the acoustic nerve.