A couple hours ago I noticed the skin on right arm is red (only in the spots I've been itching) and itchy and the whole arm is covered in dry flaky liking skin, like I can actually see the skin flake away when I itch. Eight now its just the one arm which has been in the sun as I'm in the car. I just started azulfidine sulfasalazine yesterday and Prevacid on Tuesday and have been on prednisone sense April. Is this a side effect from one if these? I know the azulfidine sulfasalazine said may cause sensitivity to sun light is it maybe that sense my arm has been in the sun? Should I be worried by this its really itchy! Any advice is appreciated thanks for the help!