A perilymph fistula is a tear or defect in one or both of the small, thin membranes between the middle and inner ears. These membranes, the oval window and the round window, separate the middle ear from the fluid-filled inner ear. The symptoms of perilymph fistula may include dizziness, vertigo, imbalance, nausea, and vomiting.
Some people experience ringing or fullness in the ears, and many notice a hearing loss.
Fistulas may be present from birth or may result from chronic, severe ear infections. Rarely, they appear to occur spontaneously. Fistulas may occur in one or both ears. Your physician will also use information from your history and physical examination, as well as objective vestibular and audiometric test results, to assist in establishing the diagnosis of perilymph fistulas. In many cases, a fistula will heal itself if your activity is markedly restricted.