Dogs suffer from a variety of allergies, just like humans. Skin allergies, known as dermatitis, are the most common type of allergic reaction in dogs.
Some dogs are allergic to flea bites, which make them very itchy — particularly at the base of their tail — and may cause red, inflamed, and scabbed skin. Food allergies generally come with gastrointestinal symptoms and may cause itchy skin as well, especially on paws and ears. Seasonal allergies usually cause itching in the paws, ears, legs, groin, and around the eyes.
Symptoms: Dogs with allergies typically scratch, bite, and lick themselves incessantly, which can lead to fur loss, irritation, and serious infections — and pain.