Allergies on the hands long small blisters very itchy to stay away from allergens, medication. 1. away from allergens: hand allergy long small blisters, considering the contact with allergic substances, first of all should be clear allergens, away from allergens, in addition to pay attention to keep the local skin clean and hygienic, do not contact with pollutants, do not scratch the small blisters or squeeze, to avoid secondary bacterial infection. 2. medication: local can be coated with glycerite lotion to stop itching, the effect is not obvious to choose the appropriate strength of the glucocorticoid drugs, such as fluoride easy, dexamethasone dipropionate, methylprednisolone acetate. If the effect of simple external drug treatment is not good, you can also take oral antihistamine drugs, such as terfenadine, ebastine. The same disease, the patient’s physical condition is different, different stages of the disease, the treatment method is different, should be standardized treatment under the guidance of the doctor. All of the above drugs should be used in accordance with medical advice.