hay fever

hay fever
a type of allergic rhinitis affecting the mucous membranes of the eyes and respiratory tract, affecting susceptible persons usually during the summer, caused by pollen of ragweed and certain other plants.

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Seasonal sneezing, nasal congestion, and tearing and itching of the eyes caused by allergy to the pollen of certain plants.

These plants are chiefly those pollinated by the wind (e.g., ragweed in North America, timothy grass in Britain). Antihistamines and corticosteroids may provide temporary relief, but the most effective long-range treatment is desensitization. Unless properly treated, about one-third of patients with hay fever develop asthma.

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also called  allergic rhinitis 

      seasonally recurrent bouts of sneezing, nasal congestion, and tearing and itching of the eyes caused by allergy (immune system disorder) to the pollen of certain plants, chiefly those depending upon the wind for cross-fertilization, such as ragweed in North America and timothy grass (timothy) in Great Britain. In allergic persons contact with pollen releases histamine from the tissues, which irritates the small blood vessels and mucus-secreting glands; symptoms may be aggravated by emotional factors. antihistamine drugs and inhaled corticosteroids provide symptomatic relief. The most effective long-term treatment is immunotherapy, desensitization by injections of an extract of the causative pollen administered once or twice a week for one or more years. Hay fever, like other allergic diseases, shows a familial tendency and may be associated with other allergic disorders, such as dermatitis or asthma.

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Universalium. 2010.

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Look at other dictionaries:

  • Hay fever — Hay Hay, n. [OE. hei, AS. h[=e]g; akin to D. hooi, OHG. hewi, houwi, G. heu, Dan. & Sw. h[ o], Icel. hey, ha, Goth. hawi grass, fr. the root of E. hew. See {Hew} to cut.] Grass cut and cured for fodder. [1913 Webster] Make hay while the sun… …   The Collaborative International Dictionary of English

  • Hay Fever — is a comic play written by Noel Coward in 1924 and first produced in 1925 with Marie Tempest as the first Judith Bliss. Best described as a cross between high farce and a comedy of manners, the play is set in a British country house in the 1920s …   Wikipedia

  • hay fever — also hay fever, 1829, from HAY (Cf. hay) + FEVER (Cf. fever); earlier it was called summer catarrh …   Etymology dictionary

  • hay fever — hay .fever n [U] a medical condition, like a bad ↑cold that is caused by breathing in ↑pollen (=dust from plants) …   Dictionary of contemporary English

  • hay fever — hay ,fever noun uncount a medical condition caused by POLLEN (=powder produced by flowers) that affects your nose and eyes as if you had a bad cold …   Usage of the words and phrases in modern English

  • hay fever — ► NOUN ▪ an allergy caused by pollen or dust in which the mucous membranes of the eyes and nose are inflamed, causing sneezing and watery eyes …   English terms dictionary

  • hay fever — n. an acute inflammation of the eyes and upper respiratory tract, accompanied by sneezing: it is an allergic reaction, caused mainly by the pollen of some grasses and trees; pollinosis …   English World dictionary

  • Hay fever — DiseaseDisorder infobox Name = Hay fever Caption = Pollen grains from a variety of common plants can cause hay fever . DiseasesDB = 31140 ICD10 = ICD10|J|30|1|j|30 ICD9 = ICD9|477 OMIM = 607154 MedlinePlus = 000813 eMedicineSubj = ent… …   Wikipedia

  • hay fever — noun a seasonal rhinitis resulting from an allergic reaction to pollen (Freq. 1) • Syn: ↑pollinosis • Hypernyms: ↑allergic rhinitis * * * noun [singular] medical : a sickness that is like a cold and that is caused by breathing in plant pollen * * …   Useful english dictionary

  • Hay fever — Also allergic rhinitis. A seasonal allergy to airborne particles characterized by runny/itchy nose and eyes, sneezing, itchy throat, excess mucus, and nasal congestion. It is a misnomer because it is not caused by hay and it * * * hay fever hā… …   Medical dictionary

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