Infections • Mycoplasma • Epstein–Barr virus (EBV) • Cytomegalovirus (CMV) • Parvovirus • Human herpesvirus (HHV-6) • HIV Toxins • Naphthalene (mothballs) (in children with G6PD deficiency) • Copper (Wilson disease) • Lead Medications (abbreviated list) • Penicillin family • Quinidine • Hydrochlorothiazide • Rifampin • Sulfonamides • Isoniazid • α-Methyldopa • Interferon-α • IVIg Autoimmune disorders • Systemic lupus erythematosus • Evans syndrome • Thyroiditis • Rheumatic disease Immunologic disorders • Common variable immunodeficiency (CVID) • Autoimmune lymphoproliferative syndrome (ALPS) Malignancy • Lymphoma Mechanical fragmentation • Heart valve homografts or synthetic prostheses • Uncorrected valvular disease • Hemolytic-uremic syndrome (HUS) • Thrombotic thrombocytopenic purpura (TTP) • Collagen vascular disease