Cryoglobulinemia vasculitis associated with adult‐onset Still's disease

Key Clinical Message The present case indicates that cryoglobulinemia vasculitis should be considered in the differential diagnosis of purpura in patients with adult‐onset Still's disease (AOSD). Abstract The presence of purpura is suggested in adult‐onset Still's disease (AOSD) hematological complications of hemophagocytic syndrome, disseminated intravascular coagulation, or thrombotic microangiopathy. We herein report a case of AOSD complicated by cryoglobulinemia vasculitis presenting with purpura.