Back in March of this year my English Mastiff started scratching something fierce, and losing his hair in a couple of patches, with red scratch marks all over his skin. No oozing though. It wasn't fleas, it wasn't ticks. The vet tested for Mange Mites (by doing a skin scraping) on two separate occasions and that wasn't it. The vet said the Mange Mites could be undetected by a microscope so we would need to dip him in a LYM dip 1x per week, for 4weeks, and apply Resolution to prevent SCABIES which could have also been the cause. (Oh, and not only did we have to dip our English Mastiff but we had to did our other 3 animals as well, don't know why, when they weren't scratching at all.....boy was I ticked off at that.....and so were the cats). The vet also prescribes an allergy medication for the itch. A month later the vet did the second scraping for the Mange Mites and it was still negative, and we did the second application of Resolution (it was April now) and the vet renewed the allergy medication and prescribed a steroid at this point, all the while my English Mastiff continued to scratch and still had hair loss, in patches. At this appt. the vet suggested we may want to take him to a dermatologist because he is a puppy and puppies usually don't have allergies this young....yeah right. Well it was at this point that I called another vet, because she was pretty much a QUACK (having me put all of those chemicals, and testings on my English Mastiff when I didn't need to). Well, needless to say, the other vet suggested changing his diet completely (which is something the previous vet never suggested) to a fish and potato or duck and potato or venison and potato diet, because he has a FOOD ALLERGY - to soy, wheat, corn, barley, chicken, oat bran, the normal Well, he had to stay on the medication (allergy and steriod to say comfortable from the itching), but his hair grew back, rash went away and his coat looks great even today. He's already shedding his puppy hair and his seasonal hair is shedding. I hope you can get a second opinion from another vet. Try changing his food, maybe it's a food allergy. It will take a while for the food he is currently eating to get out of his system though. Maybe the Vet can give him something for the itching though...poor thing
