Seizure as an Initial Presentation for Posterior Reversible Encephalopathy Syndrome in Undiagnosed Systemic Lupus Erythematosus and Lupus Nephritis: A Case Report.

Posterior reversible encephalopathy syndrome (PRES) is a syndrome presenting with neurological manifestations including headaches, seizures, and notable changes in brain imaging. It is typically associated with an acute increase in blood pressure, metabolic abnormalities, and/or medication effects. PRES is challenging to diagnose due to its variable presentation and low incidence. Herein we describe a compelling case of PRES syndrome secondary to uncontrolled hypertension in the setting of systemic lupus erythematosus (SLE) and lupus nephritis.