A 20-year-old female presented with confusion, generalized tonic-clonic seizures, and severe hyponatremia after ingesting 3,4-methylenedioxymethamphetamine (MDMA). Brain computed tomography (CT) demonstrated cerebral edema. Her hospital course was rapidly complicated by respiratory failure and shock requiring intubation and vasopressors. Refractory acute respiratory distress syndrome (ARDS) was...