Sunday I develped a rash on my upper arms, hips, thighs and ankles. Pain in my joints accompanies the swelling or the rash/hives. Went to the doctor yesterday and they are pretty sure that the rash/hives are not allergy related but are possibly related to an auto immune disorder such as RA or a thyroid problem. We are waiting on the blood work to come back, however I am worried about the rash spearding. It has now moved to the bottoms of my feet, its so painful I can't walk. Additionnaly it is now on my wrists. I'm really worried about what is going on. I am leaving for a school trip in two days and I don't want to miss it.