[Chronic inflammatory diseases of the skin / Extracted from his "Commentaries on Diseases of the Skin."].

  • Thomson, Anthony Todd, 1778-1849
Date:
[1839-1840]
Catalogue details

Licence: Public Domain Mark

Credit: [Chronic inflammatory diseases of the skin / Extracted from his "Commentaries on Diseases of the Skin."]. Source: Wellcome Collection.

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    2 B. CHRONIC INFLAMMATORY DISEASES OF THE SKIN. GROUP I. SCALY ERUPTIONS*. These are characterized by patches of opaque, whitish, or greyish scales, more or less thick, dry, flexible or friable; and either detached from, or firmly adherent to, the skin. The scaly patches develop themselves slowly; have no definite duration ; and are not attended by any very obvious fever, or state of general excitement. They appear most fre¬ quently on the extremities; but, occasionally, on the trunk of the body and the head. In some instances, the scales are thin, light, and apparently consist of the natural scales of the epidermis, which have become dry and detached; in other instances, they are thick, and appear to be formed of the cuticle morbidly changed. Both these varieties of scales differ materially from the crusts or scabs, which constitute the second stage of pustules and vesicles; or those which form on superficial ulcers. The scaly eruptions are more common among the lower, than either the higher or the middle classes of society, Women are more liable to their attacks than men; but no age nor temperament is more exempt than another. Their invasion is most common in spring and autumn: they never¬ theless appear at all seasons. The scaly eruptions generally make their appearance in the form of small, red, distinct specks, which gradually rise above the surface of the skin, harden, and form whitish or greyish scales on their summit. These inflammatory points * Vern. Syn. Acttos (G.) : Squammse (L.) : Kuba or Kouba (Arab.): Perjun (Pers.). Nos. Syn. Lepidosis (Young—Good): Inflammations Squameuses (Rat/er) : Squammes ( Cazenave—Sc bedel) ; Squammse (Willan).