Milk protein allergy stomach bad is what reason

Milk protein allergy may be due to the patient's own allergic constitution, and milk protein contains casein, lactoglobulin, whey protein and other components, the above components are allergens, easy to cause excessive immune response in the body, induce allergic reactions, cause histamine substances in the body increased, patients will appear local itching, edema, pain, throat edema and other discomfort symptoms.