Skin diseases : including their definition, symptoms, diagnosis, prognosis, morbid anatomy and treatment : a manual for students and practitioners / by Malcolm Morris.

Date:
1879
Catalogue details

Licence: Public Domain Mark

Credit: Skin diseases : including their definition, symptoms, diagnosis, prognosis, morbid anatomy and treatment : a manual for students and practitioners / by Malcolm Morris. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    and vaiiations in temperature having a marked influence on its appeai-auce and course. Vacciniform hydroa and bullous hydroa differ from the vaiiety described in that the vesicles of the former disease become umbilicated, and in the latter meet and form bulla. Pemphigus. Definition.—Pem^ihiM^Vi is characterised by the appearance of buUiB in successive crops, terminating either in the absorii- tion of the fluid or in bursting and giving rise to the formation of ulcers. Symptovis.—This disease differs according to the size, posi- tion, and behaviour of the bulliB and subsequent ulcers, but may be divided into two chief varieties—pemphigus vulgaris and pemphigus foliaceus, but the latter ia rare. PempJiigus vulgaris includes those forms Avhich are most frequently seen, and consists of two or three smaU bullse situated on slightly inflamed bases, which increase, very rapidly until they cover a smface of about two inches in diameter. They are wMte, tense, and generally oval or round, but may lose their shape by becoming confluent. The fluid in the bullee ls at first clear and alkaline, but in a short time becomes turbid and acid. A bulla may terminate by absorption of its fluid, when nothing but the dried-up cuticle remains, or it may burst, when it leaves an ulcerated surface, more or less covered with crusts A dark stain remains for some time to mark the site of a bulla, and as the disease has a tendency to ai)pear in suc- cessive crops, the skin gradually becomes more and more stained. The bullae may be scattered irregularly over the body, or may be crrouped together in circles or semicircles, fi'om the circum- ference of which fresh bullae grow at the same time as those in the centre disappear. In other but rare cases red patche.. of skin are found, in which the bull^ are badly defined or even absent All part, of the surface may be attacked with pem- phic^us, even the vagina and the rectum, but the head, palms.