Hey guys, i was reading about mange online, and my GSD was treated a few years ago for some skin problem. But since that problem her front elbows stayed with no hair and with that crusty skin. Also a little bit on her belly but and by her tail. She really does not scratch at all, just very few times, But shes always had her elbows like that and her belly since that skin problem way back. Could this be that skin problem that really never went away or this is just from the hot climate here in Miami? Or maybe her diet?? Please help!!