I have chronic back pain and take 10MG of Oxycodone every 4hrs for pain. I recently had oral surgery on a back molar and was using a heating pad to help with that. No antibiotics. Back was hurting a bit so I was lying on my left side on top of heating pad in bed. I fell asleep, about an hour later woke up, put pad away, went back to sleep. Next morning I noticed some red blotches on side of my stomach where the pad was, a little sensitive and noticed same on side of back, no redness just sensitive. 2nd day more so. 3rd morning and now is causing Great pain. Doesn t look like burn but stings bad. Back still no redness but same. Not sensitive to heat, so doesn t seem like a burn. Cold helps a little but not for long. Both front and back hurts so bad I can t sleep. Feels really sore like I got kicked with boots. I can send a pic if you wish. Just need to know is this temporary and what will help with pain? I ve tried Benadryl, Cobroxin, even icy hot, nothing seems to work. Park Ranger so I m out of city for another week. Please help if you can. Thank You, Rick H.