CONNECTIVE TISSUE AND COLLAGEN DISORDERS Define systemic lupus erythematosus Systemic lupus erythematosus is a chronic inflammatory, autoimmune, multisystem disorder. In which the body’s immune system mistakenly attacks its own tissue. Due to which a large amount of inflammation and tissue damage is seen. Systemic lupus erythematosus mainly affects skin, joint, kidney, blood cell, brain, heart, lung. Write causes and risk factor of systemic lupus erythematous (Write cause of systemic lupus