The best way to treat hives is to prevent them in the first place; your child should avoid the food or medication that caused them. (This is especially true for medication-induced hives.)
Beyond that, specific treatments will vary based on your child's age, health, and medical history, the extent of your child's disease, his tolerance for specific medications, procedures, and therapies, and, of course, your own opinions and preferences. Your child's physician may prescribe:
- Antihistamines such as Benadryl or Atarax, which help to decrease histamine release and, therefore, symptoms of urticaria. (These medications may make your child drowsy.)
- Non-sedating antihistamines such as Zyrtec and Claritin, which work similarly to antihistamines but ordinarily without making your child drowsy.
If your child is having trouble breathing, your child's physician might use an injection of epinephrine to help decrease the itching and swelling; your child's physician might also prescribe an emergency kit with epinephrine to keep on hand in case of future episodes.