Hi it started out as jock itch, then soread down my inner thigh. Week later it's spread to my stomach, back, armpits, few spots on my neck and itch real bad and swell up into whelps as I scratch them. It's all around my groin, not on genitals, mainly around my hips and stomach and lower back. ER dr said it looked like a alergic reaction to one thing I've eaten, or maybe from. New detergent. They are bright red, no pus, no blisters, just red itchy rash that itches until it's satisfied. No new meds, soaps, nothing. Plz help this is very uncomfortable but they worsen in the heat. They have spread up my stomach, sides, armpits, inside of both elbows.