What can be given to a child that has allergic reactions to antibiotics? The first one was omniceft,(not spelled correctly). Then she was given a sulfa drug, bactrim, with no problems. She has been given that twice with no problems. Then third time her entire body broke out with HIVES horrible, itching hives. Then she was finally given prednisone, which had her bouncing off the walls,This first started when ahe was 8 months old, now she is 7 years old. She has seen an allergic, was allergic to a very common grass, feathers,dust , just the regular things. the Dr. wanted to give her more of the antibiotics just to make sure. we said NO, we were sure already. Thank you and I hope you can give us some advice. L.L. t \