DEAR DR. ROACH: What is lupus, and what does it do to your body? I just had a friend who was diagnosed with it after many months of tests. -- T.S.B.
ANSWER: The term “lupus” generally means systemic lupus erythematosis (SLE), which is a systemic disorder as its name suggests. So, by definition, it affects multiple systems of the body.
One of the most commonly affected systems is the skin, and one pa…