Lupus (Systemic Lupus Erythematosus) is a chronic, inflammatory disease that can affect various parts of the body. It is classified as an autoimmune disorder where the immune system loses its ability to distinguish between foreign substances and its own tissues and cells. For some people who suffer from lupus, only the skin and joints will be affected. With others, involvement may include joints, lungs, kidneys, blood, and tissues. Generally, no two people who suffer from lupus will have identical symptoms. Treatment approaches are based on the specific needs and symptoms of each individual. The specific causes of lupus are not known, however there can be genetic disposition to the disease.