ok sooo..its been 10 days since dr. Gerald applied revolution to sunday. but there are more scabs than before and they look like scratches more than spots. her fur hasn't gotten any better, her back where the fur is going bald the fur around it is coarse. her fur has very few guard hairs and her whiskers are wavy, thus telling me she is likely a rex. I did some reading on rex's fur and its saying that after 18 months they get bald patches and thinning fur. her whole body is THINNING but she has 2 bald patches. Scabs (stratch marks) on her right shoulder, her neck and looks like she has exzema under her chin. It doesn't look like the medication is working for mites, without a skin scrape is there any other way to tell if she really has mites and its not aging? I can get a skin scrape but dr. Gerald isn't in for a few days and I kinda fell short of money, due to other medical and food bills. doesn't skin scraping usually give a false negative anyways if it is mites? arg, I don't know what to do!!!