Hello, There is a possibility that skin rashes can be made worse by certain foods and more. I would need more information to assess whether the testing done was appropriate or not. I feel that food allergy testing always needs to be evaluated with a detailed food and symptom diary. There are many foods and supplements that can be anti-inflammatory. It depends too much on the individual to be addressed here. In general, a varied diet rich in plant food, especially vegetables, can be anti-inflammatory. I suggest you get a detailed assessment or a second opinion from a functional, integrative doctor or one that is a conventional as well as naturopathic physician. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Christine Sauer