The anti-allergy medicine is discontinued and then repeated, you should clarify the allergens, stay away from allergens, full course of medication. Allergic reaction is a kind of metamorphic reaction, which is related to the contact with allergens, and can only be treated to relieve the symptoms and control the development of the disease. If you are exposed to allergens frequently, you will have another attack and develop allergic symptoms. Allergens should be clarified to avoid re-exposure to allergens, for example, if you are allergic to pollen and mites, you should stay away from the environment of pollen and mites or if you are allergic to food, you should avoid the food that causes allergy. If you are allergic to food, you should avoid eating allergy-causing foods. If your allergy is repeated after stopping the anti-allergy medication, it may also be caused by incomplete treatment, and you should use anti-allergy medication for a full course of treatment to avoid repeated episodes of the disease. If the anti-allergy medication is discontinued and the symptoms recur, you should consult a doctor and choose the correct treatment under the doctor’s guidance.