I'd at least ask to be checked out for the celiac, lactose intolerance, parasites, you name it. I've been tested at least 2-3x for all these things over the course of the past 6 years since I've been seeing my GI- nothing ever turns up! I'd like it to be something other than plain old immune system craziness also, but alas... It's good to hear though that so many of us have been tested- guess our docs are on the ball, most of the time!