Reports From National Arthritis Meeting
Lupus is a chronic inflammatory condition that is caused by autoimmune disease. Autoimmune diseases are illnesses that occur when the body's tissues are attacked by its own immune system. The immune system is a complex organization within the body that is designed normally to fight infections and other foreign invaders. Patients with lupus have unusual antibodies in their blood that target their own body tissues. Lupus can cause disease of the skin, heart, lungs, kidneys, joints, and nervous system. Generally, when only the skin is involved, the condition is called discoid lupus. When internal organs are involved, the condition is called systemic lupus erythematosus.