Email us for help
Loading...
Premium support
Log Out
Our Terms of Use and Privacy Policy have changed. We think you'll like them better this way.
Lupus is a disease that is caused by something going wrong with the immune system — the part of the body that fights off invaders, such as viruses, bacteria, and other germs. Typically, B cells in our immune system produce proteins called antibodies that protect the body from these invaders.