-ˌerəˌthēməˈtōsəs, -them- noun
Etymology: New Latin, literally, erythematous lupus
: a systemic disease of unknown cause and unpredictable course that is characterized especially by fever, skin rash, and arthritis, often by acute hemolytic anemia, by small hemorrhages in the skin and mucous membranes, by inflammation of the pericardium, and in serious cases by involvement of the kidneys and central nervous system