In modern times, lupus is a general term for diseases that affect the skin. Lupus, also called SLE(Systemic Lupus Erythematosus), is an autoimmune disease in which the immune system attacks its own tissues. More specifically, the immune system sees itself as foreign to the body and fights against itself, thereby causing widespread inflammation and tissue damage in the affected organs. It is known to affect the joints, skin, brain, lungs, kidneys, and blood vessels. The skin, especially. It is a systemic disease and it affects a wide variety of organs, but notably causes red lesions on the skin.