Help Needed, Testing Question in Celiac Disease Pre-Diagnosis, Testing & Symptoms Posted May 31, 2013 · Report to Admin I have been suffering for 7 months with a severe itching/rash issue. I saw my dermatologist beginning 6 months ago. She has not been able to figure out what my issue is. 2 months ago, I began to attempt an elimination diet based on a book I picked up. I noticed improvement after 2 weeks or so. Basically, by playing with my diet, I have come to the conclusion that I am allergic to flour or perhaps celiac. If I don't eat it, I am fine. If I eat flour, within 4 hours, I begin to itch all over my body. I went to see my family doctor today to request that he order the testing for celiac for me. He told me I have to be eating wheat for at least a few straight days for the test to have proper results. I left there determined to get myself back on a diet including wheat. I had bread with dinner and now I can not sleep from all the itching. How can I possibly eat it for several days? I am already miserable!!