An allergic reaction is a condition in which the immune system manifests itself as either too strong or too high. From the viewpoint of pathogenesis, skin allergy is actually a skin disease caused by the abnormality or imbalance of the body’s immune system, in which the main manifestation is physiological immunity is too strong or too high. For all kinds of allergies, the main treatment is to give some anti-allergy drugs, and at the same time, we should actively find out the causes of allergies, and then as far as possible to remove these factors, more commonly used for anti-allergy drugs are loratadine tablets, ipecac tablets, chlorpheniramine maleate tablets, and so on. The above drugs should be used according to the doctor’s instructions, do not use your own medicine. For recurring allergies, it is important to go to the hospital as soon as possible and complete all kinds of examinations.