Multisystem Inflammatory Syndrome in an Adult.

BACKGROUND: Multisystem inflammatory syndrome in children is a phenomenon that has emerged during the coronavirus disease 2019 (COVID-19) pandemic. There are, however, few reported cases of a similar disease in adults. CASE REPORT: We describe a 25-year-old man who presented with prolonged fever and conjunctivitis and was found to have a post-COVID inflammatory syndrome. His symptoms improved with colchicine, steroids, and a truncated course of intravenous immunoglobulin. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Post-COVID inflammatory syndrome has the potential to lead to dangerous complications. In addition, the identification of occult COVID infections could have public health implications.