Hi. DD had an allergic reaction a couple of weeks ago, came out in hives and really itchy, scratched so much that she made them bleed and very sore. Also had a raging temp. One doc said it was an allergic reaction and another said it was an infection so gave her antibiotics and it cleared up and didn't think anything more......... until last night when the same happened again and took her to doc today and it's an allergic reaction. He didn't seem bothered about finding out what had caused it but I want to find out as it's upsetting for her. I can't think of anything different she has eaten (the same as a couple of weeks ago) to trigger it. Is it true that if children are allergi to something it might not come out and it builds up and biulds up until the reaction shows. e.g I am thinking maybe a dairy intolerance but she has been having dairy for the 4 yrs of her life! Just really need some advise please.