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 that protect the body against viruses, bacteria and other foreign invaders. These foreign invaders are called antigens.

In an autoimmune disorder like lupus, the immune system cannot tell the difference between foreign substances and its own cells and tissues. The immune system then makes antibodies that, simply put, attack the body itself. This causes inflammation, pain and damage to various organs.