How does allergy rise red a knot to do on child body

According to the description, this is a symptom of skin allergy. It is recommended to wash your face with warm water, then do a good job of moisturizing the skin, and then take some antihistamines orally. At the same time, you can apply calamine lotion to help the skin itch. If the symptoms are severe, you can go to the hospital for infusion treatment.