My 6year old broke out in hives from her ears down her trunk and arms (not to her legs yet). I took her to instacare to make sure that there was no danger to her airway. I am giving her Benedryl per the Dr. s orders and it clears the hives temporarily, but they come back when the next dose is due. she also has a low fever, 100.3. I can t figure out what brought them on, but she got her ears pierced 8 days ago will surgical steel posts, could this be the cause, and do I need to take the earrings out?