Tuesday, May 10, 2011

An allergy to pollen, pollen allergy, hay fever

Warm period of the year - a period of exacerbation of allergic diseases is highly rasprostarennogo - hay fever. Hay fever (from pollen - pollen) - this is some allergic disease which is caused ~ dint of. an inadequate immune response to pollen of multiform plants - pollen allergens. The term "hay ferment" was introduced in 1819, it was assumed that the consideration of eye disease is seasonal hay. Relationship betwixt symptoms of allergies and the pollen was put in 1873.
Hay fever occurs in aggregate age groups, but usually the first symptoms begin to worry in infancy or adolescence. Hay fever - chronic sickness, the symptoms of hay fever are repeated every year at the same time. Season (grow, summer) increased symptoms - the most influential diagnostic feature of pollinosis. The harshness of acute pollinosis depends on the concentration of pollen in the air (greater amount of pollen - is more pronounced allergic reaction), the spectrum and the degree of individual sensitivity to pollen allergens (rove of sensitivity determines the duration of heightening, and the degree of sensitivity - the extreme degree of symptoms).
The concentration of pollen in the air associated with the air temperature, of the atmosphere pressure, wind speed, which largely determines the power of allergic reactions. In dry and fervid weather plants pylyat intense and allergy symptoms worse. On cold days, the pollen is released plenteous less, but the period of flowering plants is prolonged. Significantly reduced the condensation of pollen in the air during and immediately after rain and windless resist. In the morning hours (from 5 to 11 hours), the violence of deposition is maximal in the nightfall, it decreases and is minimal at adversity. When leaving a different climatic belt, where no allergenic plants, the symptoms of sharp pollinosis cropped in 2-3 days.
Hay excitement causing pollens primarily vetroopylyaemyh plants that discharge huge quantities of small (20 - 60 microns), pollen carried ~ dint of. wind over long distances - tens and so much as hundreds of kilometers. Therefore, manifestations of the sickness may be where the plant is not allergenic. In etc., plants that produce pollen, should subsist widely disseminated in the region. From a tell off of characteristics of pollen depends on the body's ability to answer to it. For example, birch pollen, timothy grass and sagebrush have a very high potential to case allergies (allergens), and pine pollen - ~t any.
In central Russia pylyat plants from recently March until October. Depending on get the better of conditions starting date of pollination of plants be possible to be shifted by 5 - 10 days. The highest allergenic smartness has pollen ragweed, sagebrush, grass (prairie) grasses and betula trees, but in different regions of the "luxuriant" different allergens (in Japan - a cedar pollens, in Ukraine - chestnut and oak, in Southern Europe - pellitory).
Allergenic plants.
Several groups of allergenic plants (trees, grasses and weeds) and a few periods or seasons of sharp pollinosis (1. Spring, 2. Early summer, and 3. Late summer or summer-autumn). In a classic case of each allergy develops in the pollen of pair or three plant species, and irritation of the disease lasts about a month. However, there are cases of multiple sensitization (polisensibilizatsii), at what time aggravation of the disease has lasted as being almost all of the warm gratify.
Woody plants.
The first period of increase of hay fever - spring (March - May). During this date pylyat woody plants. First, in March-April, blooming alder, corylus and birch. In late April, the flexion of the willow, poplar, elm, ash, maple. In May - oaks, lilacs, apple trees, coniferous trees. In Moscow and Moscow clime "dangerous dose" of pollen yield rod, alder, hazel, oak, poplar, ash, maple. The greatest in quantity important allergen in this group is to birch pollen. Later, all the other trees dusty tree (in June).
Grasses (prairie) grasses.
Pollen grains - pollen allergen sum up one in Europe, opens the abet period - the early years. Depending forward the region of Europe grasses efflorescence from May until late August. In the back half of May and begin to dust foxtail bluegrass. In June, they are joined by timothy, fescue, and hedgehog. In the medial band is the main cause of hay flush pollen of timothy grass, bluegrass, hedgehogs, fescue, wheat grass, flout, feather grass, bent grass, foxtail and fervency.
Weed Science.
The third period of acute pollinosis - late summer (August - September). This time, the flowering plants of the household Asteraceae and Chenopodiaceae; vysokoallergennymi properties desire sagebrush and weeds. In these families in that place are plants that cause allergies and in earlier periods: notwithstanding example, a dandelion, a close particular of wormwood and ambrosia - in May. Plantain, sorrel and nettles - representatives of various families - are beginning to dust in June and July, their sputtering continues to the time when autumn.
Seasonal allergic rhinitis and conjunctivitis, pollen asthma.
During the end of pollination (palinatsii) plant pollen from the demeanor settles on the mucous membranes of the nose, eyes and opening, along with the air enters the bronchial tubes, in contact with the skin, and sensitive to her nation, symptoms of allergies. They are caused ~ means of allergic inflammation that develops as a issue of contact with allergenic pollen cells of the immune a whole .
The main nosological forms of hay agitation are seasonal allergic rhinitis, conjunctivitis (seasonal allergic rinokonyunktivit) and pollen asthma. You may exist allergic to pollen (hay fever), allowing that you each year, roughly the sort period of spring or summer, civility one or more of the following symptoms:
• invincible sneezing (sneezing bouts), itchy nose, bountiful watery nasal discharge (heavy cold) or confined nose (allergic rhinitis, allergic rhinitis);
• longing and redness of the eyes, vapid eyes (allergic conjunctivitis);
• itching palate, projection (allergic pharyngitis);
• dry cough, difficulty wish, shortness of breath or choking, wheezing in the packing-box (pollen asthma);
• skin rash, itching of the skin (atopic dermatitis or allergic urticaria).
Status of the seasonal increase of hay fever like "colds", but the temperature usually remains normal. In the middle of illness may experience common symptoms - the to such a degree-called "pollen intoxication: irritability, fatigue, not rich appetite, weight loss, depression, possible migraine attacks. In touch with pollen in the gastrointestinal extent, such as bee products, possible qualm, vomiting, sudden abdominal pain in connective particle with urticaria.

One of the principally affordable and effective forms of allergy management is a pill Claritin.

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