It can be frustrating to find out that you are now allergic to something that you weren't allergic to just a few years ago. It's possible to go all your life without being allergic to dog and cat dander, mold or pollens, and develop one later in life. This is known as adult onset allergy, and it's more common than you may have guessed. Many allergies are known to affect the airways, and this can be dangerous for those with a chronic lung condition, such as Chronic Obstructive Pulmonary Disease (COPD) or asthma.
What causes late onset allergies?
Experts have come up with several possible causes for why you would develop an allergies late in life, and it's not always easy to pin point why for each individual case. One reason is, you can actually overexpose yourself to a certain allergen, like animal dander if you've had pets for a long time. Or maybe you live in a house with a mold problem, and now you've started having reactions to it.