Thank you both for your suggestions. I did call the vet and he said that there were, indeed, other tests he could run. As the problem is intermitant (sometimes he doesn't do it for several months),...
I have a 2 year old papillon that itches and it's driving him crazy. I took him to the vet about 8 months ago since he had several raw spots around his back side from scratching/biting. He was...