Hi Emma,
I was reading your post and I thought of a councelor that might help. Her name is Susan Marque. Maybe you heard of her? It seems that she had skin problems (eczema) all her life and was able to cure her condition through diet. She does consultations over the phone and helps you with cooking over the phone too. Here is an article about her
Five Star Reviews : Gourmet Foods/Dining : Q&A Interview - Gourmet Foods : Susan Marque
http://www.fivestarreviews.com/Review.aspx?ReviewId=297
or
www.susanmarque.com