[My Izzie Belle]

Hello, we have a year old, 4lb Yorkie. Since she was 3 months old she's had intense itching, redness, and red sores that come and go. Her hair is very thin and falling out, with bald spots. Her breeder said she's never had this problem with their other Yorkies. We've been to many vets and even tried holistic treatments, but nothing works. She's had prednisone, antibiotics, sprays, and we've eliminated and tried every food we can think of. She responds to cool wraps, spot shot, and vinegar washes, but it's just temporary. We just saw another vet who suspects mites, although the skin scrape was neg. She said the mites don't always show up, so she wants to treat her with 1% Invermectin every week for a month. She also tested positive for yeast on skin and ears, so the vet put her on Keto shampoo, Zymox ear drops and wants to feed her Purina Hypoallerginic food. The Hills is too big for her to chew. Since we always feed her high end food we are unsure of this Purina- does any one feed this to their dog? We are also very nervous about giving her this Ivermectin, she's just so tiny.. We are praying that someone can give us some advice.