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Marin Amat syndrome Marin Amat syndrome(MAS) is a rare form of acquired facial synkinesis (Marin Amat is a spanish ophthalmologist, born in 1879). In this syndrome,there is involuntary eye closure with the opening of the jaw or lateral movement of the jaw(1.) It is postulated that the disorder is due to contraction of the orbicularis occuli with muscle stretch acting as a trigger.(2) The proprioceptive impulses of the muscle strecth of the facial muscles are carried in the facial nerve(3). Due to aberrent regenration, orbicularis occuli gets impulses during strech of facial muscles. References: 1. Pavone P, Garozzo R, Trifiletti RR, Parano E. Marin-Amat syndrome: Case report and review of the literature. J Child Neurol 1999;14:266-8 2..Rana PV, Wadia RS (1985) The Marin-Amat syndrome: an unusual facial synkinesia. J Neurol Neurosurg Psychiatry 48: 939–941 3. De Long RN. In: Baker AB, Baker LH, eds. Case Taking and N4eurologic Examination in Clinical Neurology. Hagerstown, Harper and Row, 1980:1-187.