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HAY FEVER, HAY ASTHMA, or SUMMER

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Originally appearing in Volume V13, Page 113 of the 1911 Encyclopedia Britannica.
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See also:

HAY See also:FEVER, HAY See also:ASTHMA, or SUMMER  CATARRI[, a catarrhal See also:affection of the mucous membrane of the upper See also:respiratory See also:tract, due to the See also:action of the See also:pollen of certain See also:grasses . It is often associated with asthmatic attacks . The disease affects certain families, and is hereditary in about one-third of the cases . It is more See also:common among See also:women than men, See also:city than See also:country dwellers, and the educated and highly See also:nervous than the See also:lower classes . It has no connexion with the coryzas that are produced in nervous See also:people by the odour of See also:cats, &c . The complaint has been investigated by See also:Professor W . P . See also:Dunbar of See also:Hamburg, who has shown that it is due to the pollens of certain grasses (notably See also:rye) and See also:plants, and that the severity of the attack is directly proportional to the amount of pollen in the See also:air . He has isolated an albuminoid See also:poison which, when applied to the See also:nose of a susceptible individual, causes an attack, while there is no result in the See also:case of a normal See also:person . By injecting the poison into animals, he has obtained an See also:anti-toxin, which is capable of aborting an attack of See also:hay See also:fever . The symptoms are those commonly experienced in the case of a severe See also:cold, consisting of headache, violent See also:sneezing and watery See also:discharge from the nostrils and eyes, together with a hard dry cough, and occasionally severe asthmatic paroxysms . The See also:period of liability to infection naturally coincides with the pollen See also:season .

The See also:

radical treatment is to avoid vegetation . See also:Local treatment consisting of thorough destruction of the sensitive See also:area of the mucous membrane of the nose often produces See also:good results . There are various drugs, the best of which are See also:cocaine and the See also:extract of the suprarenal See also:body, which, when applied to the nose,are sometimes effectual; in practice, however, it is found that larger and larger doses are required, and that sooner or later they afford no See also:relief . The same remarks apply to a number of patent specifics, of which the See also:principal constituent is one of the above drugs . An additional and stronger objection to the use of cocaine is that a " See also:habit " is often contracted, with the most disastrous results . Finally Dunbar's serum may be applied to the nose and eyes on rising, and on the slightest See also:suggestion of irritation during the See also:clay; it will, in the large See also:majority of cases, be found to be quite effectual .

End of Article: HAY FEVER, HAY ASTHMA, or SUMMER
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