Handbook of diseases of the ear : for the use of students and practitioners / by Urban Pritchard.

  • Pritchard, Urban.
Date:
1896
Catalogue details

Licence: Public Domain Mark

Credit: Handbook of diseases of the ear : for the use of students and practitioners / by Urban Pritchard. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    the mucous membrane is so dry that it presents a glazed appearance. It would appear that whereas the former variety is more common in damp cold climates like our own, the dry catarrh is more prevalent in hot dry countries ; hence it is often met with in the prairie districts of America. 3. Granular catarrh.—When this exists small eleva- tions, in size and shape like the millet seed, are scattered over the mucous membrane, these elevations being usually of equal size. The small vessels leading to and from these elevations are seen to be greatly enlarged, giving the mucous membrane an injected appearance ; this congestion produces catarrh, and some thickening of the mucous membrane. The granulations are mere hypertrophies of the normal adenoid tissue of the parts, or in other words, enlarged blood glands. Such a con- dition is very liable to produce Eustachian and tym- panic catarrh by extending along the Eustachian tube. 4. Catarrh due to growths.—Including under this head the catarrh which arises in consequence of the presence of enlarged tonsils, adenoid growths, nasal polypi, hypertrophies, &c, of the mucous membrane of the nasal passages, and which will be considered in detail in a future chapter—(Chapter VII.). Two or three of the foregoing varieties frequently exist in the same case. The simple and dry catarrh seem to belong more especially to adult and advanced age, while the adenoid form is characteristic of early life. As the condition extends, the mucous membrane lining the tympanic cavity, including the various folds and coverings of the ossicles, becomes thickened, and adhesions are formed in various places ; the due mobil-