Introduction: Marcus Gunn jaw winking syndrome (MGJWS) is a rare congenital disorder belonging to the synkinetic eye movement group of disorders observed in children. It occurrence in adults and patients with diabetes has not been reported. Material and Methods: A 64 year man with poorly controlled diabetes of 18 years presented with 3 month history of jaw winking on the left side along with gustatory sweating, which was managed conservatively. There was spontaneous improvement in jaw wink at 4 months of follow up. Conclusions: Acquired causes of MGJWS are not known. This is probably the first report of this syndrome occurring at such a late age. Long standing poorly controlled diabetes may have had some role in the development of jaw winking in this patient.
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