If you have started any new medications recently at all, I would be especially concerned and call any doctor or his nurse who prescribed them and let them know. How long has this been going on? Red patches like dry skin or like really red or raised? Curious, thought I am certainly no doctor. Just had an allergic reaction to meds once that was exceptionally server and it nearly did me in literally. Not to freak you out, just adding be cautious and if nothing else find a friend of a friend who is a nurse, a healthline, anything but ask questions and be specific. GOOD LUCK!!!