Evans syndrome is a rare chronic hematologic disorder characterized by the simultaneous or sequential association of autoimmune hemolytic anemia (AIHA; a disorder in which auto-antibodies are directed against red blood cells causing anemia of varying degrees of severity) with immune thrombocytopenic purpura (ITP; a coagulation disorder in which auto-antibodies are directed against platelets causing hemorrhagic episodes) and occasionally autoimmune neutropenia, in the absence of a known underlying etiology. The disease is Evans syndrome (MONDO_0016030). Also known as: Evans' syndrome, autoimmune hemolytic anaemia and autoimmune thrombocytopenia, autoimmune hemolytic anemia and autoimmune thrombocytopenia, immune pancytopenia.