My Five Yr Old Grandson Developed A Ring Worm On

My five yr old grandson developed a ring worm on inside of his elbow but along with that he has hive like 'things' all over his torso front and back and a little bit on his face and groin area. I have seen ring worm and the hives is something I've never seen come with ring worm. They are not itchy but they look horrible and not at all like ring worm.. my daughter is keeping him away from siblings and using cream prescribed but they seem to not be going away and this has been since last week maybe Wed. So what's with the hives?