My 3 1/2 year old has had an on again, off again rash on her chin. It is scaly and dry and usually hangs around for days at a time. It always comes back in the same place. She has had two cold sores in the past which have erupted around the same area. I wonder if it is related to that or if she has a food allergy. We feed her all common allergenic foods (wheat, dairy, nuts, fish, etc...) and wonder if maybe she has an allergy to something? Thanks for the info!