Hay fever, hay asthma and excessive sneezing / by Litton Forbes.

  • Forbes, Litton.
Date:
1890
Catalogue details

Licence: Public Domain Mark

Credit: Hay fever, hay asthma and excessive sneezing / by Litton Forbes. Source: Wellcome Collection.

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    is rare in children and very rare in old persons. It is chiefly met with during the period of active life, ranging from about twenty to fifty. Before discussing in detail the modern doctrine of the causation of hay fever it may he well to mention some subsidiary causes to which the affection has been attributed. These, though not the producing causes, are undoubtedly at times capable of aggravating symptoms and inducing paroxysms, and thus rendering an attack more severe and more prolonged. Among such may be mentioned heat, light, dust, benzoic acid, excess of ozone, and the smell of certain flowers, such as the rose, i J geranium, or heliotrope. jg[eat.—The earliest advocate for the theory that heat might be productive of the disease is Bostock, whose view Phoebus so far adopted as to surmise that the first heat of sum^ner exercised an important influence. But, as Sir Morell Mackenzie well remarks, were this the case we should expect to meet with the disease m a particularly virulent form on the plains of India, or during the topical summer of America, or in the equa- torial regions. Such, however, is not the case. j^lgj^t.—^iYon^ light such as sunshine if falling upon the face, will often cause a paroxysm of sneezing, and other symptoms. This is especially the case when open-
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