The nausea and bloating are classic GI celiac symptoms and so are vitamin and mineral deficiencies. There are antibody blood tests specific to celiac disease that can be ordered. I would suggest you specifically request this be done for your boy friend. Make sure that at the minimum these two tests are ordered: total IGA and TTG-IGA. In addition to being tested for mineral deficiencies, has your boyfriend been tested for vitamin deficiencies, particularly B12, niacin and thiamin and D3? I would also ask for a thyroid panel. In addition, some of the behaviors you describe suggest Tourette Syndrome to me.

Hi Cristiana, we're italians, we eat pasta everyday so I guess consuming gluten won't be a problem. Thanks for the help Violet

Hi Violet That's great that he is consuming gluten.  When I was tested a few years ago we were told to to include "gluten in more than one meal a day for at least six weeks before testing."   @Scott Adams or another Mod might update this, as I believe the thinking is changing on this. Re: Coeliac screening.  Yes, the fact that your boyfriend was negative all those years ago does not mean that he does not have it now.  He might have developed it since.  My nephew is diabetic, Type I, and in fact he has to be routinely tested every three years because Type I diabetics can be prone to developing it.  That just goes to show it can develop at any time.  My own children have already been tested twice, when they encountered gastric problems at different times. I hope that helps. Cristiana      

Hi Cristiana He says he was tested when he was very young and was negative, but I heard that celiac can just "activate" at any age, is that true?  He is consuming gluten, thanks for telling me that. Violet

Hello Violet The fact that you are posting from Italy is good - we coeliacs on this forum hear a lot of good stories about Italy being ahead of the game, testing all  children at 6 years of age, I seem to recall?  Also, Italian doctors should be aware of the work of Dr Alessio Fasano, and his work on gluten and coeliac disease, including neurological issues. Is your boyfriend actually consuming gluten?  He will need to be if he is to be tested. Cristiana