An allergy is when your body's immune system reacts to something harmless, such as food, plants, or medicine. The substance that causes the allergic reaction is called an allergen.
Year-round allergies are:
These allergies can happen at any time of year or all year long. They don't happen just in one season, like seasonal allergies.
If you're allergic to house dust, remove or frequently clean items that collect dust, such as:
Clean your home thoroughly:
Use items that help prevent dust from building up in your home, such as:
If you're allergic to animal dander: