Similar to people, allergies in dogs are managed and not cured. The dog’s body is hypersensitive to something and the reaction to that hypersensitivity is itching. Dogs can be allergic to their food, flea bites, grass and pollen in their environment, or direct contact with certain compounds like laundry soap or hay. The first step is to diagnose your dog’s itching, scratching and chewing as a skin allergy problem. The challenge for you and your veterinarian is figuring out the causes and finding an effective treatment.