Intolerance to gluten. I have the same thing. I'm also lactose intolerant. I didn't have it when I was younger. Potatoes and rice are without gluten. Avoid bread, pizza, hamburger, Pasta, pita bread, pastry etc etc . You should be good if you avoid those products. Another tip I can give you is clay. I started drinking powder clay for human consumption mixed with water. About two spoon in your daily water. Your skin will be perfect, better stools, good hair, no more burning stomach etc etc. It costs nothing and it's excellent for your health. I drink it for two weeks then stop for a month and then again for two weeks etc etc. A lot of mammals lick clay in the wild.