Listen up! Don't take your ears for granted. Hearing loss is the third most common health problem in the U.S, and it can affect the quality of your life and relationships. About 48 million Americans have lost some hearing. Certain conditions, including age, illness, and genetics, may play a role in hearing loss.
In the past, a condition called cholesteatoma was a common cause of perilymph fistula, but this condition is now encountered only rarely because of improved antibiotic treatments. It is possible that there are occasionally fistulae associated with tiny cracks in the bone between the middle and inner ear.
A salivary fistula can result from injury to any salivary gland, but most commonly the parotid. Fistulas forming from other glands is uncommon. Damage may be due to traumatic wound to the face e.g. bite wound or abscess drainage. Exopthalmus is the most likely cause of zygomatic fistula. The continuous flow of saliva due to trauma to the face prevents healing and therefore a fistula develops.