hay fever

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Related to Pollen allergy: hay fever

hay fever,

seasonal allergyallergy,
hypersensitive reaction of the body tissues of certain individuals to certain substances that, in similar amounts and circumstances, are innocuous to other persons. Allergens, or allergy-causing substances, can be airborne substances (e.g.
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 causing inflammation of the mucous membranes of the nose and eyes. It is characterized by itching about the eyes and nose, sneezing, a profuse watery nasal discharge, and tearing of the eyes. The cause is a sensitivity to one or more species of pollens or fungi. In addition, many patients with hay fever develop other allergic conditions, e.g., asthmaasthma
, chronic inflammatory respiratory disease characterized by periodic attacks of wheezing, shortness of breath, and a tight feeling in the chest. A cough producing sticky mucus is symptomatic.
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 and sinusitis. In the spring, hay fever may be caused by tree pollens (oak, elm, maple); in summer, by grass pollens, wheat or corn rusts, or fungus spores; in late summer and fall, by ragweed pollen, which is the most common cause. Temporary relief of symptoms may be obtained from antihistamines and decongestants, such as ephedrine. Physicians may resort to corticosteroids in severe cases. Sometimes desensitization measures are taken, consisting of repeated injections of small amounts of the allergen (pollen) until its presence produces no symptoms; however, the treatment must be continued from year to year, since immunity is not permanent. Some relief can be obtained by removing pollen from the air by air conditioners and filters.

Hay Fever

 

an allergic disorder in man, caused by sensitivity to the pollen of certain plant species. Hay fever belongs to the group of pollinoses. The disorder appears during the flowering of grasses and trees. Pollinoses may be spring, summer, or autumn reactions, depending on individual sensitivity to a certain species of pollen and on the time of flowering of the offending plant. Clinical manifestations include irritation of the mucous membranes of the nose and eyes and, less frequently, attacks of asthma. Treatment involves specific desensitization between attacks and the use of such symptomatic preparations as ephed-rine, Adrenalin, and antihistamine preparations during the allergy season. Prophylaxis includes changing the place of residence during the hay-fever season and other means of avoiding contact with the allergen.

hay fever

[′hā ‚fē·vər]
(medicine)
An allergic disorder of the nasal membranes and related structures due to sensitization by certain plant pollens. Also known as allergic rhinitis; pollinosis.

hay fever

an allergic reaction to pollen, dust, etc., characterized by sneezing, runny nose, and watery eyes due to inflammation of the mucous membranes of the eyes and nose
References in periodicals archive ?
He advised pollen allergy patients to adopt precautionary measures to avoid any complication.
Various plants that blossom in the spring season especially the paper mulberry trees, cause pollen allergy and affect those who are highly sensitive and susceptible and symptoms ranging from minor flu like ailments to a form of medical condition called status asthmatics, narrowing of airways.
Although individuals may experience oral symptoms following ingestion of fruit and vegetables without underlying pollen allergy, in the majority of cases the initial event is sensitisation to pollen, and then there is subsequent development of cross-reactivity to food allergens, so that patients often develop pollen allergies before the development of oral symptoms.
In the case of pollen allergy, the antibody is specific for each type of pollen: one antibody may be produced to react against oak pollen and another against ragweed pollen, for example.
Global Markets Direct's, 'Cedar Pollen Allergy - Pipeline Review, H2 2012', provides an overview of the indication's therapeutic pipeline.
On the directions of Chief Commissioner ICT, Zulfiqar Haider Khan, three free pollen allergy relief camps have been held in the city this year to facilitate the patients coming from various sectors.
The final 57 subjects were 33 boys and 24 girls aged 10-11 years who had no asthma, pollen allergy, or initial decreased lung function.
Fortunately, the itching stopped completely over winter, confirming our belief that he suffered from a pollen allergy.
The pollen allergy - which causes sneezing fits, a runny nose, streaming eyes and headaches to one in four people in the UK - could cause drivers to lose concentration.
Allergy sufferers rejoiced when Seldane appeared on the market -- the first antihistamine to relieve the sneezing, watery eyes, and runny noses of pollen allergy without making the user sleepy.
Instead, they enter human noses and throats, triggering a type of seasonal allergic rhinitis called pollen allergy, which many people now as hay fever or rose fever (depending on the season in which the symptoms occur).
com/research/43bkqp/birch_pollen) has announced the addition of Global Markets Direct's new report "Birch Pollen Allergy - Pipeline Review, H2 2012" to their offering.