Marcus Gunn phenomenon

The Marcus - Gunn syndrome ( synonym: Mandibulopalpebrale Synkinesis ) is a congenital disorder of movement of the upper lid (English: yaw winking ), the palpebrae a paradoxical innervation between the levator, superioris ( levator ) and the lateral pterygoid muscle, so the muscle moves the condyle during opening of the mouth forward is due. The symptomatology has a partial or full droop (ptosis ) of the eyelid concerned, the but - often completely - at the moment lifts in which the person opens his mouth and moves the lower jaw to the opposite side of the affected eye.

The manifestations of this disease vary greatly, and it is not yet clear how it comes to this paradoxical innervatorischen coupling, the involved muscles are still in the normal case of different cranial nerve innervated ( oculomotor nerve and mandibular nerve ). There is an ideal treatment not yet. In severe cases, one tries with operational funding to improve the situation. Some patients, however, it is possible independently to get through training before the mirror, the lack innervated upper eyelid under control.