Hives in babies, also called pediatric urticaria, is caused by skin allergies. There are many reasons for allergies, which may be caused by the environment, or by insect bites and so on. Treatment should be detached from the allergens, and then through the external application of drugs or oral medication and other ways of treatment. 1. Skin allergy caused by the environment: it may be related to pollen, oil smoke, animal dander, hair, milk, eggs, peanuts, preservatives, artificial coloring, hot and cold stimulation and other factors in the environment. Generally, the allergens can be removed from the allergens can be improved. If the allergy is serious, you can apply glycerine lotion, or oral loratadine, cetirizine and other antihistamines. 2. Skin allergies caused by insect bites: After the bite of bees, wasps and other insects, the toxins may cause changes in the body, resulting in hives-like manifestations. If there are only one or two stings, apply ice to the stings, wash the stings with soap and water, and apply hydrocortisone cream. If there are more stings and the allergic reaction is severe, you need to go to the hospital for prompt treatment. There are many other allergic causes of hives in babies, so it is important to find out the cause of the allergic reaction in time for targeted treatment. All of the above medications should be used under a doctor’s supervision, and avoid self-medication.