I'm 30 and I have been having the exact same issue since May of this year. The rash will appear in different spots on my body and it looks different everytime, I am always itchy and it doesn't subside no matter how many antihistamines I take. I have gone to the dermatologist several times and everytime he prescribes me a different antihistamine that do not help. I have a suspicion that i have a gluten allergy. But it's hard to convince my doctor since I dont have all the clear signs of a gluten allergy.View Thread