My 5 year old son was diagnosed with a severe case of ITP 2 years ago. He has had tummy aches on and off for years and we were told that it was nothing to be concerned about. He just tested positive with the first blood test for Celiac but his doctor ordered a genetic test that shows that it is not in his DNA. he said he cannot possibly has Celiac if it is not in his genetic makeup. I really feel that his test result is related to his ITP. It is hard to ignore His tummy aches, dry, awful skin and night sweats. Can anyone offer us an explaination? I heard that there are endocrine diseases that can create celiac disease and autoimmune diseases like ITP even if they are not in the patients DNA. Help. Searching Mom.