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Parinaud's Syndrome What? - Impaired upgaze - Light-near dissociation - Convergence retraction nystagmus - Eyelid retraction (Collier's sign) Why? - Pineal region tumors - Multiple Sclerosis - Hydrocephalus β "setting sun sign" - Vascular disease (stroke) Dr. Gabriela Figueiredo Pucci @gabifpucci #Parinauds #Syndrome #diagnosis #pineal #neurology