Lupus is a condition that affects the immune system. It can cause problems with your skin, joints, kidneys and other organs.
Symptoms of lupus include joint pain, extreme tiredness and a rash on your face.
There's currently no cure for lupus, but the symptoms can often be treated with medicines that reduce inflammation in your body, such as steroids.
Lupus is caused by your immune system mistakenly attacking healthy parts of your body. It's not fully understood why this happens.
Page last reviewed: 30/08/2017
Next review due: 30/08/2020