In the United States, about 15 to 30 percent of people with allergies will react to cats and dogs, notes the Asthma and Allergy Foundation of America or AAFA. Other pets, such as birds, rodents, and even larger pets like horses, goats and other farm animals may also cause allergies, according to the American College of Allergy, Asthma & Immunology. Exposure to allergy-causing proteins in pet hair, dander, urine and saliva will trigger the immune system to overreact in these individuals.
Nasal Allergies
People with pet allergies may experience nasal allergies when allergens enter through the nose and throat. Symptoms of nasal allergies include sneezing, runny or stuffy nose, itchy, red or watery eyes, postnasal drip and itchiness in the roof of the mouth or throat. Some people may also experience facial pressure and pain, describes the website MayoClinic.com.
Skin Allergies
Allergic reactions to pets may also include skin allergic condition called allergic dermatitis, notes the AAFA. Symptoms include intense red, raised bumps called hives and itchy rash on the face, neck and upper chest. Some people may also develop redness on the skin where a pet scratched or licked it.
Asthma
People with pet allergies may also develop allergic asthma when allergens get into the airways and lung tissues. Wheezing, difficulty breathing, chest tightness and cough are some symptoms associated with this type of allergy, notes MayoClinic.com. People with pet allergies may also have trouble sleeping at night because of their asthma symptoms. According to the AAFA, about 30 percent of people with asthma will react to cats.
