The ready reference handbook of diseases of the skin / By George Thomas Jackson, ... With 99 illustrations and 4 plates.

Date:
1906
Catalogue details

Licence: In copyright

Credit: The ready reference handbook of diseases of the skin / By George Thomas Jackson, ... With 99 illustrations and 4 plates. 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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    give rise to irritation until removed. When removed the lesion heals slowly after weeks or months. The disease is chronic, showing no tendency to recovery. Thus far, treatment has been unavailing. Acne Medicamentosa. See Dermatitis medicamentosa. Acne Mentagra. See Sycosis. Acne Miliaris. See Milium. Acne Necrotica. Synonyms : A. frontalis; A. varioli- formis ; A. pilaris; Acne rodens; A. ulcereuse; A. arthritique; A. miliaire scrofuleuse; Lnpoid acne ; Acnitis. The disease begins as a flattened, red, firm papule, with a red border which iu a few hours has a pale yellow centre which looks like a pustule, but which is a crust. The })apule may be the size of a head of a pin or that of a lentil. The crust is 2 to 4 mm. in diameter. At first yellow, it soon becomes brown. If the crust is raised, it discloses a deep, cup-shaped depression with rugose walls. There is a delicate layer of pus between the crust and the bottom of tlie dej)ression. Left to itself, the crust falls after many weeks, leaving a large, red, dry depression, which after a time becomes wliite and, if on hairy regions, remains hairless, the hair usually falling with the crust. Sometimes the original crust enlarges by the formation of a second vesicle about the first, or two vesicles near each other may fuse. If scratched, they may become impetiginous. The sites of ])redilection for the disease are the nose, temples, forehead, between the shoulder-blades, and over the breast bone. It is most often seen on tlie temples, and may spread on the scalp or bearded portion of face, causing destruction of the hair. The disease may occur on the limbs. It is not seen before puberty, and continues indefinitely or by relapses in one place or in several, often symmetrical regions. Tile resulting cicatrices are very disfiguring, and resemble those of variola. An oily seborrhoea may precede and accompany the disease.
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