It is more common than you might think. The problem is, people do know how to read their bodies symptoms. Also, Gluten intolerance goes often hand in hand with lactose intolerance. If you have lactose intolerance it is a huge risk you have or will get gluten intolerance. Same goes if you have gluten intolerance it is a huge risk you have or will get lactose intolerance. Also, gluten allergy is NOT the same as Celliac disease
When you have gluten intolerance this symptoms are the most common...
Headache and migraines
Itchy dry skin
swollen gassy stomach
Yellow, and very smelly poo
Exhaustion and lack of energy
stomach pains, so you know that you are a live (Feels like stomach is about to explode, with ribs and back pains, and you do not know if you are going to burp, fart or vomit)