Tinnitus in one ear, also called unilateral tinnitus, is often due to pressure or injury in an ear canal or eardrum. It has many possible causes. Tinnitus is when you hear a ringing in your ears.

Your inner ear, also called the labyrinth, plays a key role in your hearing and sense of balance. Several conditions can impact the inner ear. Your inner ear is the deepest part of your ear. The inner ...