I’m wondering if you live in an area where your dog has to be on Frontline, Advantage etc.
for fleas. When my Lab/Chow mix was about 2 years old (living in Florida) she started
scratching & biting her hind end till most of the hair was missing. Turns out she was allergic to flea bites.
She was on a preventative but they still get bitten though the fleas die. First Vet
prescribed similar to yours. Although I did not use the shampoo as it said I had to wear
gloves and to wash it off immediately if there was any contact with my skin. So why would
I put that on my dog? Second Vet, more on the holistic side, prescribed daily Omega-3
Fish oil and the problem stopped in a week or so. My dog is now 12 and has never had
this issue again.
