with allergies usually react by sneezing, but your pet reacts by scratching.
Both you and your pet are reacting to an allergen, which is a substance
that causes irritation. Most allergens irritate from inhalation, but few
are contact types, such as an allergy to wool. Some allergens are found
in food, most commonly corn, wheat, soy, beef, and dairy products. The
first signs of allergic reactions are scratching, licking, biting, or rubbing
the skin. This can lead to infection characterized by red bumps and pimples.
Because of the discomfort, it is important to get professional help as
soon as possible.