It can be caused by ear problems in your outer, middle or inner ear. It also can be caused by problems with the hearing (auditory) nerves or the part of your brain that interprets nerve signals as sound (auditory pathways). Earwax protects your ear canal by trapping dirt and slowing the growth of bacteria. Impacted ear wax can cause tinnitus, but it’s not permanent. Ototoxic drugs can affect only one earalthough this doesn’t seem logical.
Symptoms And Causes