How does allergy rise a knot to do on child face

If your child has facial allergy, you need to take him to the pediatrics department of the hospital in time. After he is diagnosed with allergy, he needs to be actively treated with anti-allergy drugs under the guidance of the doctor. At the same time, he needs to be screened for allergens, and then he needs to stay away from allergens in time. You need to pay attention to his personal hygiene at ordinary times.