Lupus nephritis is kidney inflammation caused by systemic lupus erythematosus (SLE or lupus). SLE is an autoimmune disease—a disorder in which the body’s immune system attacks the body’s own cells and organs. Up to 60 percent of people with SLE are diagnosed with lupus nephritis, which can lead to significant illness and even death.
Symptoms of lupus nephritis include:
Blood in the urine
Foamy appearance to urine
High blood pressure
Swelling of any area of the body
joint pain or swelling
muscle pain
fever with no known cause
red rashes, often on the face, which are also called butterfly rashes because of their shape
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