Lupus is a disease in which your immune system attacks your body's own tissues. This is called an autoimmune disorder, and can be compared to the idea of "friendly fire." Lupus causes inflammation in your body's organs and can cause permanent scarring that ultimately jeopardizes the function of certain organs and systems in your body.
The lupus that occurs in children affects the body in the same way as adult lupus. Boys are more likely to get childhood lupus than men are likely to get adult lupus. Usually, childhood lupus affects certain organs, like the kidneys, to a greater degree. The incidence of kidney disease in childhood lupus is about two times greater than in adult lupus. Childhood lupus generally requires more aggressive therapy than adult lupus.