38. Pendred Syndrome
Pendred syndrome is a genetic disorder typically associated with hearing loss, and a thyroid condition called a goiter. This is an enlargement of the thyroid gland, which is responsible for releasing hormones into the body. Thankfully, this enlargement does not result in any metabolic disorders. The syndrome usually presents itself during late childhood or early adulthood.
The majority of people with this syndrome have severe hearing loss due to the changes in the inner ear that was present at birth. In addition, problems with balance occur due to the malfunction of the vestibular system, which is in the inner ear. Unfortunately, there is no treatment for Pendred syndrome other than supportive therapies to correct the hearing loss and dysfunction of the thyroid.