Has he been tested for mites?  Chachi was scratching and losing hair off of his back and my vet thought it was allergies.  After taking a couple different meds and not improving the vet did a skin scrape and found he had mite (mange).  He had to go through some dips but has been better every since and now his hair has all grown back.  I would ask you vet to do a skin scrape and check for mites.        |