I have a 5 year old min pin, with itchy skin, bumps, bald spots. It is on her back, chest and face. I have seen 6 vets (2 clinics but different vets ) tried Antibiotics, prednisone, baths, dips, skin scrapings and blood work and nothing shows up. The prednisone helped but once off of it she went straight back to BAD. She scratches constantly and is bald all over her back, neck, ears and face. the only area that she doesn't seam to scratch is that which she cant reach with her paws or objects (she will get under the coffee table and use it on her back) .I have put her in a cone to protect her eyes and face as she will scratch them until they are raw and sore and continue even while hurting herself. The bumps are white, some times puss comes out, other times not. She gets flea drops religiously and I have found NONE on her, I also bath her with medicated shampoo once a week, as directed by the vet. I have changed her diet several times, even to the point of cooking her food myself (just in case allergies though the blood work and skin scrapings didn't show any). I would say it looks like the pictures of mange but the skin scrapings didn't test positive for any mange, and the prednisone seamed to work while she was on it. I just don't know what to do...and continuing getting the same answers from vets is costly and inefficient. I NEED HELP!!