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Not medical advice
There is now a reported association in the medical literature between
celiac disease and seizure disorder.  In children there may be severe
epilepsy with the initial focus being in the occipital or temporal lobes(
the rear end of the brain).  It may respond very well to typical seizure
drugs.  There may also be a build of calcium in that part of the brain on
CAT scan. There is not much reported on adults with seizure disorder
other than the fact that it is more common for celiacs to have a seizure
disoder than the general population.  I certainly have seen patients
whose seizure disorder is worse when they have not been gluten free.
However this may be due to better absorption of the  antiepileptic drugs
as an alternative explanation rahter than a direct toxic effect of gluten
or a nutritional deficit.
Joe Murray
PS there was an international symposium in April in San Marino devoted to
the epilepsy in celiac disease.