Facial diplegia as unusual variant of Guillain-Barré syndrome: first case reported in Venezuela.

The Guillain-Barré syndrome (GBS) is the most common cause of acute generalized paralysis. GBS is an acute inflammatory demyelinating polyradiculoneuropathy. It usually presents as a paralysis that starts in the lower limbs and then progresses symmetrically upward. The present study reports a case of bilateral facial palsy as the initial manifestation of GBS. This is a report of a case of a 37-year-old male, diabetic, that eight days after having suffered acute sinusitis, gradually presented with right hemicranial headache, dysarthria and sialorrhea. The neurological examination disclosed the absence of the bilateral frontal folds, accompanied by epiphora, bilateral lagophthalmos, bilateral Bell sign and salivary drooling through both commissures of lips. At 48 hours after hospital admission the patient showed paresis in both upper limbs. The cerebrospinal fluid analysis reported 1.1cells/mm3, fully represented by lymphocytes of normal aspect and total proteins were 196.9 mg/dL. The electromyography was consistent with acute demyelinating polyneuropathy, with a predominant motor component and a major facial involvement. With the clinical and laboratory findings, a diagnosis of GBS was established. Treatment was started with plasmapheresis and intravenous immunoglobulin, with the subsequent improvement of the clinic. The facial diplegia is part of the regional variants of GBS. Although about 60% of GBS patients present with facial weakness, it is usually preceded by weakness in the limbs. This case makes evident that GBS may present clinically as a facial diplegia.