Re: Is Lupus the only auto immune disorder that causes hives/rashes?
Abbey32, There are also foods that are common triggers for hives: strawberries are a classic. People can eat them for years without any problems, then BOOM. Happened to my husband several years ago. He sprouted almost 100 biggies in a matter of several hours.
You could google for "urticaria" (hives).
Sunlight and certain autoimmunes don't mix well, as I'm sure you've been reading: lupus, MS, RA, etc.
Good luck with your skin problem. I hope you find the cause quickly.