Говори и наслаждайся (Speak and Enjoy). Колодина Н.И - 18 стр.

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suffer from hay fever may develop the symptoms associated with periodic asthma or a sinus infection. The
allergen-antibody theory does not fully explain allergic reactions because the membranes and glands in eyes
and ears are controlled by the independent nervous system, which keeps these organs in balance. But the in-
dependent nervous system itself is part of the emotional-response center and may cause the feelings of anger,
fear, resentment, and lack of self-confidence in reaction to allergy-causing substances.
The most common cause of hay fever is the pollen of ragweed, which blossoms during the summer and au-
tumn. When airborne pollen particles, as well as mold, come into contact with the victim's membranes, they
can cause allergic reactions that release histamine and result in a virtual blockage of air passages. To prevent
hay fever or to decrease the severity of its symptoms, contact with the ragweed pollen should be reduced.
Although some communities have attempted to eliminate the plants that cause the reactions, elimination pro-
grams have not been successful because airborne pollen can travel considerable distances. Antihis-tamine
can help with short but severe attacks. Over extended periods of time, however, patients are prescribed a se-
ries of injections of the substance to which they are sensitive in order to increase immunity and thus be re-
lieved of the seasonal allergy.