affected dogs are usually chewing or scratching at their tail-base or around the neck, but they can be itchy anywhere. Unfortunately, it takes only one flea to cause a major irritation for a dog allergic to fleas, which is why some dogs that have very few fleas can be itchier than a non-allergic dog with many fleas. While often a seasonal problem (spring/summer), flea allergy can occur year-round, particularly for inside pets. This is by far the most common type of skin allergy seen in dogs.
Inhaled allergy (or atopy)
is relatively common and generally affects all areas of your dog, including the paws, ears, and face. The most common allergens (a substance causing an allergy) are grass pollens, other plant pollens, dust mites and moulds (the latter two being found normally in indoor environments). While often seasonal initially, this allergy can progress to be a year-round problem.
is quite uncommon and usually affects areas with little or no hair covering, for instance, the feet and abdomen. Allergens include grasses, plants, clothing/carpet fibres, hessian bedding and many others. This is often a seasonal allergy but can be year-round, depending on the cause. The most common cause is contact with Wandering Jew; an evergreen, small-leafed creeping plant.