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Allergens: Pollen What is pollen? Pollen is the tiny egg-shaped male cells of flowering plants, including trees, grasses, and weeds. Pollen is microscopic in size. Pollen is the most common cause of seasonal allergic rhinitis, sometimes known as hay fever . Which plants produce pollen that cause allergic reactions? Plants that have powdery granules of pollen that are easily blown by the wind, such as: Trees, such as oak, western red cedar, elm, birch, ash, hickory, poplar, sycamore, maple, cypress, waln...
Allergens: Animals What is an animal allergen? Allergens found in animals are a common cause of allergic reactions. They are caused by the protein found in an animal's: Skin Dander Saliva Urine Household pets, like cats and dogs, are the most common sources of animal allergens.
Allergens: Dust and Dust Mites
Allergens: Dust and Dust Mites What are dust allergens? Dust allergens are substances found in dust, and may include: Fabric fibers Lint Feathers Stuffing materials Animal protein (dander, saliva, urine, body oils) Bacteria Mold and fungus spores Food particles Plants Insects and their waste What is a dust mite allergen? Dust mites are microscopic organisms that can live and thrive throughout homes and businesses. The mites and their waste products thrive in: Draperies Stuffed animals Bedding Upholstere...
Asthma: When to Get an Allergy Test
Asthma: When to Get an Allergy Test If you often have allergy symptoms—such as itchy, watery eyes; a runny nose; wheezing; sneezing; and hives or itchy skin—an allergy test can help determine what you’re allergic to. Sometimes you can tell the allergic substance because of the time that your symptoms happen--in the spring or fall, for instance. But you may need specific allergy testing to figure out other allergies. These tests can be done for adults and children of any age. Your health care provider wi...