On the parasitic affections of the skin / by T. M'Call Anderson.

  • Thomas McCall Anderson
Date:
1861
Catalogue details

Licence: Public Domain Mark

Credit: On the parasitic affections of the skin / by T. M'Call Anderson. Source: Wellcome Collection.

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    described by Bennet under the name of Parasitic pity- riasis (b). Favus of the Nails (Favus Unguium) is not commonly- met with. It occurs in those who have been long affected with favus of the hair-follicles. Persons so affected, in scratching the diseased parts with the nails, succeed in causing a deposit of some of the vegetable matter beneath the nail, where it takes root and germi- nates. Instances of favus unguium, as a primary affec- tion, are very rare, but they have been met with. When the vegetable matter is inserted beneath the nail it is under circumstances the most favourable to its germina- tion, situated as it is between the superficial and deep epidermic layers, the nail forming the superficial one —see Fig. 1. Mahon first observed this affection on his Fig. 1. A, A, tipper surface of nail; b, b, lower surface of nail; c, c, favus matter (white in the wood-cut, yellow in the original), running upwards and forwards between the lamina? of the nail. own person, having contracted it while treating children affected with favus. The symptoms are well described by Bazin. After the spores have remained for some time, and have commenced to germinate beneath the nail, the latter becomes thickened over the affected part, while its colour at the same time apparently changes,
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