There is no quick way to stop the itching of allergies. You have to stay away from allergens, apply medicines locally and take medicines orally to improve the symptoms. 1. Stay away from allergens: allergy is a kind of allergic reaction, and contact with allergens have a relationship, the first should be clear allergens, and then away from allergens. 2. Topical application of drugs: allergy itching can be applied locally glycerine lotion to relieve itching, the more serious symptoms can also be applied hydrocortisone, trimethoprim and other drugs. 3. Oral medication: If the effect of simple local medication is not obvious, you can also take oral medication, such as loratadine, cetirizine and so on. Allergic itching should go to the hospital in time, under the guidance of the doctor to choose the appropriate treatment, the above drugs should be used in accordance with the doctor’s instructions, can not be used blindly.