Flagellate dermatitis: An atypical skin finding in adult‐onset Still's disease

Abstract A 23‐year‐old woman followed for adult‐onset Still's disease (AOSD) presented fever and chest pain. Clinical examination showed erythematous papules suggestive of flagellate dermatitis. Laboratory findings showed increased Cardiac troponin. Myocarditis due to AOSD was therefore suspected. The patient was treated with prednisone and methotrexate with significant clinical improvement