Sulfa is definitely on our list of drugs that we should avoid. Not all lupus patients need to avoid sulfa antibiotics, but there is a very high percentage of adverse effects of these drugs on Lupus patients.
There is a litany of anti-biotics on the market that you can take. The list is rather extensive, but here are some of the classes of anti-biotics:
Macrolides, Lincosamides, Streptogramins
I think that your doctor was not paying attention when he ordered a sulfa antibiotic the second time. Perhaps you should call again to explain this to him and ask him for an anti biotic that is not sulfa based and does not cause lupus-like symptoms. I've had good luck with keflex (Cephalexin hydrochloride).
Peace and Blessings