what is lupus illness
About Lupus. Lupus is an autoimmune disease that can affect various parts of the body, including the skin, joints, heart, lungs, blood, kidneys, and brain.Normally, the body's immune system makes proteins called antibodies to protect the body against viruses, bacteria, and other foreign materials.bout Lupus. Lupus is an autoimmune disease that can affect various parts of the body, including the skin, joints, heart, lungs, blood, kidneys, and brain.