My granddaughter woke up Wednesday with a red, Hot area, swollen to about the size of a softball, and that really itched on the inside of her left knee. A trip to the ER produced little more than an antibiotic, Bactrin and 4 prednizone. Yesterday she started with the same symptons on the inside of her left elbow. Now the hotness area on the knee is gone, but the other symptons remain and around the outside area looks like a purple bruise. Help