"By exudative erythema is understood a disease of unknown etiology with polymorphic skin lesions--hyperaemia, oedema, and hemorrhage--arthritis occasionally, and a variable number of visceral manifestations, of which the most important are gastro-intestinal crises,endocarditis, pericarditis, acute nephritis, and hemorrhage from the mucous surfaces. Recurrence is a special feature…and attacks may come ... Read More