I've known for over a year that I was allergic to wheat and rice, and except for falling off the wagon occasionally, have been pretty good about not eating either. However, I've noticed that when I do eat wheat -- I feel hungover afterwards, and rice brings on a migraine (as do wine, changes in the barometric pressure, and eyestrain).
Now, I've been having migraines much more frequently, so I hied myself to the neurologist, who was very interested in my allergies (I'm allergic to wheat, rice, eggs, pears, plums, pineapple, yeast, all grasses, most trees, dogs, cats, dust, and mold) and then asked me if any one had ever ruled out Celiac disease. No one ever has. I've never had any of the bowel issues, but have had depression, dry skin, mental fog, and migraines for years and often thought "Gee, if I had diarrhea I'd fit the bill for Celiac". Now he tells me I may be one of those folks who only has neurologic symptoms.
So now, I'm waiting for the blood test results. I find this all very ironic as I just helped a friend go gluten-free about 3 months ago after she nearly died from anemia -- her celiac disease was misdiagnosed as idiopathic anemia and IBS.
Now, if I come back as not celiac disease -- I guess it's back to the drawing board. In the meantime, I'm on a low dose of Elavil to keep the migraines at bay.