Systemic Lupus Erythematosus: Pathogenesis and TreatmentAbout This Hardback Systemic lupus erythematosus (SLE) is a medical condition whereby the body's natural defense system targets the healthy tissues of the body. SLE is caused by a defect of the immune system that may arise due to a genetic susceptibility coupled with an environmental trigger. Vitamin D deficiency is another factor associated with lupus. Genetic studies show that SLE is an oligogenic trait with multiple genes contributing to it. The