The most common symptom in dogs are those of itchy ears and face, and inflammation of the skin. In cats itching, inflammation of the skin , respiratory problems, and behavioral changes are the most common symptoms. In both dogs and cats, the digestive system can be affected as well. Allergies are provoked by allergens. An allergen is any substance of material that can cause a reaction in the allergic patient while not affecting a non-allergic individual.
Some allergens cause a reaction when inhaled.
These are call aeroallergens. If you think your pet may be allergic, you should schedule your pet for an exam with a veterinarian. Your pet may be able to be treated with medications or may need to be allergy tested. If your pet goes untreated and the itching continues, your pet is likely to cause serious self trauma by licking, biting, and rubbing itself. This will cause extensive damage to the skin, which can lead to ongoing secondary infections.