<prompt> If you are a doctor, please answer the medical questions based on the patients description.5 yr old boy with red inflamed blotches like hives with a center on arms, legs chest. Warm to touch possibly small bit of pus oozing. Not itchy but painful to touch. Looks like spider bites. Went to ER and was given benedryl prednisone. So far, no change.  <response>: HI...sometimes the hives can take a longer time to resolve and not only this, it has a propensity to recur too after a week or two. I think he is having hives or urticaria, and you can wait for the response for a day or two. But if the kid is having black colored stools or pain the tummy or blood in the urine or motion or joint pains, I suggest you get back to your physician as we need to explore the possibility of vasculitis then. Regards - 