Your home, school and workplace contain causes of environmental allergies. These inhaled triggers can include dust, animal dander, feathers, mildew, pollen and mold spores.
Other triggers include:
Dust mites are tiny bugs that live in bedding, mattresses, upholstered furniture and carpets. No matter how clean your house is, it’s impossible to completely get rid of dust mites. However, you can limit contact, especially in the bedroom, if you:
Grasses, trees and weeds produce pollen that travels through the air and is inhaled, which causes seasonal allergy symptoms and triggers asthma. Pollen is higher from trees in the spring, grasses in the summer and weeds in the fall. The beginning and end of each season may vary depending on weather conditions and where you live. If possible: