At first I thought it was because she started off her stay with us by having ticks...she had a tick on her ear and I thought that the scratching was what caused this...but, she's been free of ticks for weeks now, and her ear has only gotten worse. Her ear is almost completely bald now and the edges are all crusty. It looks the same on the inside as the outside, but she wouldn't sit still long enough to get a decent shot. She scratches it quite a bit and sometimes whines when she does, so I know some places must be a bit tender...is it possible it's because her nails are too long? I know they need to be cut...so I'm gonna do that tonight...but I've never known something like that to be caused by claws that were simply a little too lengthy. Any ideas on what it is? Should I try some type of lotion or shampoo? She hasn't had any new food, or shampoo or anything that could cause an allergic reaction, so we can narrow that out. And I know she hasn't gotten into anything unusual, as she's ALWAYS with us or in a safe place. Any help is greatly appreciated by herself and me, so thanks in advance.