Environmental Allergies (Atopic Dermatitis)
If your dog is receiving a year-round flea control product, and a diet trial did not provide any relief from itching, your dog likely has environmental allergies, also known as atopic dermatitis. Allergens in the environment can include pollens, molds, or dust mites. Most dogs with environmental allergies will have flare-ups at specific times during the year, such as spring or summer, when pollen levels are high. Atopic dermatitis can be diagnosed with skin testing by a dermatologist, or by process of elimination.