DRESS syndrome associated with influenza virus.

Drug reaction with eosinophilia and systemic symptoms (DRESS) syndrome is a potentially life-threatening drug-induced reaction. Though the most common clinical manifestations are eosinophilia, fever, rash, and lymphadenopathy, patients can also present with severe organ dysfunction. The pathogenesis of DRESS syndrome is only currently partially understood, though it is known that DRESS syndrome is commonly associated with infection or viral reactivation; specifically, human herpes viruses 6 and 7 and Epstein-Barr virus have been implicated in the pathogenesis. We present the first case of DRESS syndrome in the context of serology-proven influenza virus.