Why Do I Suddenly Have an Allergy to Pet Dander?

It's possible to suddenly develop an allergy to dogs, even if you've never had any issues before. As we age or our immune system changes, it can start to react negatively to new or even old things in our furry friends. Additionally, you may find that you're only allergic to certain breeds of dogs that have more dander. Generally, pet allergies are caused by exposure to dead skin cells (dander) that are shed by animals.Any animal with fur can cause pet allergies, but cats and dogs are the most common culprits.

Cats and dogs have proteins in their saliva, sweat, urine, and skin that can cause an allergic reaction in people. When these substances dry out on your pet's coat, they form a layer called dander which contains allergens. Dander can dry out, crack, and fall onto carpets, furniture, and clothing. You can inhale it or transfer it from your hands to your eyes and nose.Dog and cat allergens are everywhere.

Even if there are no pets present in a home, classroom, workplace, or other area, pet allergens can still be found there. This is because people can carry pet allergens on their clothes.People with asthma and pet dander allergies may also experience breathing problems, chest pain or tightness, and wheezing. If you don't have a pet but are considering getting one, it is important to make sure you don't have an allergy before you commit. Allergies occur when the immune system reacts to a foreign substance such as pollen, mold, or pet dander.