The most common causes of hives in a pediatric population is actually a viral illness. If you don't think he's having other allergic symptoms, this could be the culprit.
My 10 year old had an allergic reaction Sunday night and still has welts. Is it normal for his body to heal like this?My 10 year old son had an allergic reaction while asleep Sunday night and woke up with his trunk covered in welts. He was taken to his pediatrician and prescribed 4mg Dexamethasone, 2 tabs first day and 2 two days after.His only known allergy are peanuts (severe).He is still getting new welt outbreaks and does not seem to be getting better, but physically feels fine minus the itching.Thanks for your help.