Systemic lupus erythematosus (i/sɪˈstɛmɪk ˈluːpəs ˌɛrɪθiːməˈtoʊsəs/), often abbreviated to SLE or lupus, is a systemic autoimmune disease (or autoimmune connective tissue disease) that can affect any part of the body. As occurs in other autoimmune diseases, the immune system attacks…