I have a Doxie I got from the shelter. He has this recurring issue with the tips of his ears and where his ears bend on the top becoming bloody messes. He scratches them raw and bleeds everywhere. We take him to the vet, he gets 2 shots..one being a hydrocortisone the other some sort of antibiotic..and he's fine..but then a few weeks later hes raw and bleeding again. We can get it to stop but then he shakes his head and its like blood splatter analysis time... Any suggestions? Any reasons why it comes and goes? Right now the poor fellow has a slathering of a & d ointment, a layer of gauze, then a layer of vet wrap.. I gave him some benadryl, and his antibiotic..