A perilymph fistula occurs when there is a tear in the oval or round window that separates the middle ear from the inner ear. The inner ear is filled with perilymph fluid; when there is a tear, this fluid leaks into the middle ear space.
The most common cause of a perilymph fistula is head trauma and barotrauma.
- Hearing loss (fluctuating or sudden)
- Ear pressure
A perilymph fistula may resolve on its own with strict bed rest. Medications can help with vertigo and other symptoms. However, surgery is often recommended.
A surgical procedure called Round Window Fistula Repair is often performed.