In my opinion, gluten hates most people. Our ancestors that didn't have disease and digestive issues didn't consume gluten.
Also, you don't need to test gluten sensitive to know that gluten is bothering you. It can still irritate anything in your body. Example: We are not going to test sensitive to saccharine, but it can still be killing us on the inside.
You may want to look into Gut Dysbiosis. I also have a blog and a facebook page that you can use for reference for food and holistic topics like this. scdfoodie.com
Eczema doesn't need steroids, it needs a food change.