My dog has had quite a few health problems and I need some advice. She is forever at the vet so here goes the history. She was always having overweight issues and so I put her on weight control food-good expensive brands. She would lose some weight but after being on NutroMax for weight control for awhile she developed a huge kidney stone that had to be removed surgically. The Vet put her on Science Diet prescription C/D and cranberry pills. After a trip to the groomer, I noticed a few bumps on her back that seemed to start to spread then a patch of hair came out. Vet put her on antibiotic-cephalexin and all bumps went away but hair continued to fall out. The pattern is mid spine is hand size bald spot-flank right side weak thin hair and on left flank side little bulls eye patches (just a couple) no itching whatsoever and no mange, looks strange, as though she has been clipped in these area on purpose-other dog in house fine. This time vet draws blood for thyroid but it turns out fine. Vet suggests that it is cushings disease but she does not have other cushings symptoms such as excess drinking and urinating and does not have swollen belly, so vet puts dog on ketoconazole for possible yeast problem (suggested by dermatologist). I decided that that it could be the c/d food but vet disagreed. But I stopped it any way. Then I made a homemade stone diet and after about 2 1/2 days of ketoconazole and home made diet, my dog starts vomiting and diarrhea. Back to vet, this time pennicillin and centrine for vomiting and diarrhea. Vomiting and diarrhea have stopped and now she won't eat anything but a little yogurt-and will drink water. She has currently stopped the ketaconazole because I can't keep it down her. I am at a loss now as to the hair loss and the gastric upset. Has anyone else gone through any of this with the hair loss? It seems that in trying to treat this I have ended up with all sorts of problems and I love this dog and don't know what to do next. Help!!!