I've been tested for all of the other auto immune diseases and so far it looks like I just have the lupus that affects the skin. I'm lucky though, i've not had many lesions, a couple of nasty ones on my face at one time, the plaquinel is wonderful for the lumps and bumps and lesions that appear because of the lupus. The plaquinel seems to keep the lumps at bay, although I am having some nasty huge lumps coming up behind my ear today, but i've noticed that the more stressed out I get, the worse the lumps and lesions tend to get. If you have a positive on the skin lupus, your rhuemy should put you on plaquinel. It's well tolerated and fairly inexpensive. It's been around for many years and was originally used to treat malaria, as it's an anti-malarial drug.
Keep me posted on your progress, if you can't get any answers, move on to a different doctor. With lupus you have to make sure that you're very aggressive towards finding out anything you can because so much is still very unknown about the disease. You can not afford to just wait around and see what some old doctor says, you have to be aggressive in your search for you, because you are responsible for yourself in the long run. Please keep me posted.