question: I have been suffering with what my doctor thinks is a pinched nerve. Have had severe pain and cramping in my leg for over a week. Am scheduled to go an MRI tomorrow. I have been using a heating pad on area of pain in my buttock area and soaking in Epsom salts to Eli ease pain. This evening while bathing I noticed some red blotches on my buttock and leg. Doctor has me on oxycodon for pain. What could these red blotches be?