ihave been using a gym for over 1 year. this week istarted using there sauna two days later ithought i pulled a back muscle but the next day i had two red patches on my back by the evening the 1 sideof my back where it hurt looked like a red and white checker board where i had been laying on a hot pad but this has not gone away could i have shingles or a kidney infection if not what?
Optional Information:
Male , Age: 48
Already Tried:
nothing