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What is the meaning of Hay fever?

What is it?

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Hay Fever is the common name of seasonal forms of the disease (hay fever) whose main symptom is allergic rhinitis. The term "hay fever", which appeared in 1829, out of date, since the disease is not of fevers and nothing to do with hay. Rhinitis is an inflammation of the mucous membrane lining the nasal cavity. In cases where inflammation is caused by allergies, called allergic rhinitis, and Allergy-provoking substances - allergens. If allergic rhinitis causes pollen, they are characterized by seasonality. The cause of rhinitis that occurs year-round, is, as a rule, house dust, including tiny particles of skin and hair (dandruff) allowed.

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