Drug-Induced Hypersensitivity Syndrome resulting in Hepatotoxicity and Epstein-Barr Virus reactivation following initiation of Levetiracetam

A 28-year-old male with a past medical history of alcohol abuse had new-onset seizures suspected to be caused by alcohol use. Twelve days after starting levetiracetam for seizure prophylaxis, he began to develop a pruritic rash, darkening of his urine, periods of jaundice, and hot flashes that correlated with the timing of his levetiracetam dosing. He was subsequently found to have lymphocyte-predominant leukocytosis, elevated aminotransferases, and alkaline phosphatase. Following discontinuation of his levetiracetam, he was found to have positive Epstein-Barr virus (EBV) serology suggestive of reactivation. This case demonstrates levetiracetam as a rare cause of drug-induced hypersensitivity syndrome (DIHS) along with reactivation of EBV.