Why is gluten intolerence called celiac disease?

Because it causes: Celiac disease is autoimmune disorder of small intestines that occurs in genetically predisposed individuals of all ages.It is caused by a reaction to gluten a protein found in wheat, barley and rye. That's why it is called gluten intolerance.Once the source of gluten, that is diet free from wheat, rye and barley is introduced the symptoms get better.