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When your eyes are exposed to anything to which you are allergic, histamine is released and the blood vessels in the conjunctiva become swollen (the conjunctiva is the clear membrane that covers the "white" of the eye). Reddening of the eyes deve...
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An allergen is a substance that can cause an allergic reaction. Allergens are substances that, in some people, the immune system recognizes as"foreign" or"dangerous" but cause no response for most people.Bacteria, viruses, and animal parasites Che...
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Detailed information on pollen allergy, also called hay fever, including information on which plants produce the most pollen and allergic rhinitis prevention during pollen season
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Your allergies could be caused by plant pollens such as those from weeds, grasses and trees, or outdoor molds.
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For many allergy sufferers, pollen and mold are the main problems.Spring is in the air. Unfortunately, so are the many tree and grass pollens that cause seasonal allergies. This can be bad news if these tiny particles cause your asthma to flare up. But the change in seasons doesn't mean that you have to hibernate until winter. While you may not be able to avoid your triggers completely, there are many ways to help limit your exposure.
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If allergies bother you in the fall, you're most likely sensitive to one or more molds, weeds, trees or grasses.
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Detailed information on pollen allergy, also called hay fever, including information on which plants produce the most pollen and allergic rhinitis prevention during pollen season
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pollen Pollen is found in flowering plants. Bees collect pollen while they are searching for nectar. Pollen can be gathered from bees or harvested from plants by machines. Bee pollen contains the male reproductive cells (gametes) of flowers and digestive enzymes from bees.
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Dust mites are perhaps the most common cause of nasal allergies. These mites are microscopic organisms that live in bedding, upholstered furniture, and carpets. They thrive in warm, humid conditions.
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Detailed information on dust mite allergens Dust mites are microscopic organisms that can live and thrive throughout homes and schools. The mites and their waste products thrive in the following:
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It's not the dust mite itself that causes trouble for people, but its shed skin and fecal matter. These substances bring misery to millions of allergy sufferers.
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