I have not been diagnosed with lupus even though it seems as if I have many of the symptoms for it. My ana is negative and I think the anti-nuclear whatever test is also negative. So, my rheumatologist said he is sure I don't have it. Well, until I get a definite diagnosis i'll continue to visit here.
Anyway, the rheumatologist did a test on me that found high quantities of antibodies to a common parasite. So, in order to treat that, he gave me high doses of a sulfa drug. That was awful! I had horrible headaches. I had diarrhea. It was only eating large quantities of food with the pills that kept me from throwing them up, because I sure did want to. The only thing I didn't get from the pills, that I think people with a sensitivity would probably get, is a rash.