J.H.
I'm assuming the Dr. ask about what soap & shampoo you may be using, and also detergent. My daughter had a problem with the soap I was washing her clothes in. So it could even be her sheets? She also broke out on the face and ears bad from a medicine the Dr. had gave her that she was alergic to, that I guess was unusual. YOu may try taking just one food away, and see if it makes a difference, and then put it back in and take away a different one, just in case she may be alergic to one.