Went to the ER last night because my pain meds just were not touching the pain. The doctor there told me to get tested for gluten allergy because it is probably causing the sciatica. I have never heard that before. Has anyone else ever been told that? I have never had an MRI because my insurance won't pay for it. I did have an X-ray at my chiro and he showed me the part of my spine that the problem was.