I have neurological issues and gastritis, constipation with no urge. But unable to get treated as medicines aggravate my stomach problems , constipation, dehydrated like weakness as if my body dries up so much do that I struggle for taking food and get too weak to get up from bed. This happens with all medicines, antacids too. My endoscopy, CT scan of abdomen and pelvis came normal. Montoux test is 30 mm. Doctor has suggested for barium follow through x-ray. I s that necessary after normal CT scan report?