Just went to the vet with Lola yesterday for what sounds like the same exact thing. I'm 95% sure that cephalexin is what we came home with. Still too early to tell if it will do the trick, but we've dealt with this or something similar before, and it did the trick. Our vet thinks the bacterial infection was triggered by her allergies. She already has the scabs though, and when they fall off they take fur with them, which is why we took her to the vet.