Coeliac disease, also spelled celiac disease,'s an autoimmune disorder of the small intestine that occurs in genetically predisposed people of all ages from middle infancy on up. Symptoms include chronic diarrhœa, failure to thrive (in children), and fatigue, but these may be absent, and symptoms in all other organ systems have been described. A growing portion of diagnoses are being made in asymptomatic persons as a result of increased screening. Coeliac disease's caused by a reaction to… (More on Coeliacs)