Basically in wheat allergy - there is no component of typical allergy rather it is an autoimmune condition of the body or the gastrointestinal mucosa where if gluten is being ingested ( Gluten is basically protein in nature, which is found in wheat and barley). Someone, who is genetically predisposed to have celiac disease, when they take any food items containing gluten like wheat or barley, then the gluten gradually destroys the villi present in the small intestine. Once the villi are destroyed then the food nutrients are not able to enter into the blood stream and the person is basically deprived of some very important nutrients like protein, carbohydrates, vitamins, and minerals. Thus in long run, the patient would come with different symptoms like - indigestion, chronic diarrhea alternating with constipations, vomiting, abdominal cramps, anemia, lethargy and laziness; the child is not able to concentrate on studies, low immunity and which might lead to chronic cough and cold issues, chronic fatigue syndrome, irritability, weightloss, lack of growth.