Lupus nephritis is a type of kidney disease caused by systemic lupus erythematosus (SLE), or lupus, a chronic, autoimmune disease in which the immune system mistakenly attacks the body's tissues, causing inflammation and organ damage. Lupus is characterized by painful or swollen joints, muscle pain, extreme fatigue, unexplained fever, and reddish skin rashes. Below you may find medications used to treat or help with Lupus Nephritis. More about Lupus Nephritis