Moebius Syndrome Support Group

Mobius syndrome is caused by abnormal development of the cranial nerves. This rare disorder has a number of causes. Most often affected are the cranial nerves VI and VII. Occasionally the cranial nerves V and VIII are affected.

If the cranial nerve VI is affected, the patient suffers from loss of lateral gaze. If cranial nerve VII is affected, the patient suffers from bilateral facial palsy — mask-like expressionless face with mouth constantly held open. If cranial VIII is affected the patient suffers from hearing loss.

Although its rarity often leads to late diagnosis, Infants with this disorder can be identified at birth: by a "mask-like" expression detectable during crying or laughing due to paralysis (palsy) of the sixth and seventh cranial nerves.

There is no specific course of treatment for Mobius syndrome. Treatment is supportive and in accordance with symptoms. Infants may require feeding tubes or special bottles, such as the Haberman Feeder, to maintain sufficient nutrition. Surgery may correct crossed eyes and improve limb and jaw deformities. Physical and speech therapy often improves motor skills and coordination, and leads to better control of speaking and eating abilities. Plastic reconstructive surgery may be beneficial in some individuals. Nerve and muscle transfers to the corners of the mouth have been performed to provide limited ability to smile.