And what should do you if your child is allergic to nuts? Doctor Ashton says first of all see a pediatric allergist. Get your child tested. If they are diagnosed with a real food allergy make sure you have multiple Epipens all over various locations. Make sure people know how to use them and speak to your child's pediatrician about having other medications like steroids, Benadryl, antihistamines, on you or with that child because preparation is key. It can be very scary and to be clear, life threatening.