Cats and dogsĪllergens from cats and dogs are found in skin cells the animals shed (dander), as well as in their saliva, urine and sweat and on their fur. Prolonged or regular exposure to the allergen can cause the ongoing (chronic) airway inflammation associated with asthma. When you inhale the allergen or come into contact with it, your immune system responds and produces an inflammatory response in your nasal passages or lungs. When you have allergies, your immune system makes antibodies that identify your particular allergen as something harmful, even though it isn't. These antibodies protect you from unwanted invaders that could make you sick or cause an infection. Your immune system produces proteins known as antibodies. Request an Appointment at Mayo Clinic CausesĪllergies occur when your immune system reacts to a foreign substance such as pollen, mold or pet dander.

Seek emergency care if wheezing or shortness of breath rapidly worsens or if you are short of breath with minimal activity. If your signs and symptoms are severe - with nasal passages feeling completely blocked and difficulty sleeping or wheezing - call your doctor. If symptoms persist for more than two weeks, you might have an allergy. Sometimes it's difficult to know whether you have a cold or an allergy. Some signs and symptoms of pet allergy, such as a runny nose or sneezing, are similar to those of the common cold. Direct contact with an allergy-causing pet may trigger allergic dermatitis, causing signs and symptoms, such as: This type of dermatitis is an immune system reaction that causes skin inflammation. Some people with pet allergy may also experience skin symptoms, a pattern known as allergic dermatitis. Trouble sleeping caused by shortness of breath, coughing or wheezing.Audible whistling or wheezing sound when exhaling.If your pet allergy contributes to asthma, you may also experience: In a child, frequent upward rubbing of the nose.Swollen, blue-colored skin under your eyes.Pet allergy signs and symptoms caused by inflammation of nasal passages include:

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