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.

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