I also had the rash on the chest, totally intolerable! just wanted to tear my skin off... I also take allergy meds, periactin and atarax, my dermatologist gave me a little tip, when you start to itch really bad, run a cold bath, put in 1 cup of baking soda, its tough to get yourself in it, since its so weird, but it actually takes the itch away for a while. Hope that helps.