I think your dog had a food allergy so you are changing foods what can you do for the itching in the meantime please?

White dogs are more prone to itchy skin. Dogs certainly can have food allergies, but much of the time it can be the heat (if it's hot) or even in the house where the skin can get dry. Try using an Oatmeal Dog Shampoo from your pet store. Rub in, leave for five minutes and rinse well. STOP USING HAIR DRYERS TO DRY YOUR DOG OFF and get as much of the dampness off your dog with a towel and then let them air dry themselves. Be sure, if it's cold that your dog doesn't get chilled. Of this doesn't work and your dog has no fleas, then you should take your dog into a vet. They will determine if it's dermatitis, fleas or food allergies. I have a Bichon Frise X and I just had to put her on low doses of Cortisone because she was scratching herself raw. She's white, had no fleas and was fine before on her diet. Of course Cortisone should be used short-term and not often. Remember, just like people dogs can get allergies from the changing of weather (pollens.)