This Article  • Full text PDF  • Send to a friend  • Save in My Folder  • Save to citation manager  • Permissions  Citing Articles  • Citing articles on Web of Science (1)  • Contact me when this article is cited  Related Content  • Similar articles in this journal  Social Bookmarking   What's this?

Frances Pascher, M.D.; Henry Silver, M.D.

AMA Arch Derm. 1957;76(4):501-503.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

On the Mechanical Pathogenesis of Some Dermatologic Appearances. Abstract of a paper delivered by DR. MORRIS LEIDER.

After preliminary remarks on cause and pathogenesis of disease and on the factor of mechanical events in disease production, the essayist discussed in detail the mechanical reasons for (1) the phenomenon of black dermographism, (2) the production of artificial pilonidal cysts, and (3) the preponderant localization of syphilitic chancres in the coronal sulcus of the penis.

The phenomenon of black dermographism is easily explained on the basis of relative hardness of powders dusted on the skin and of metals riding on the skin. Hardness is defined by physicists as the capacity of a substance to abrade another. Plotting common powders used in cosmetics and medications and common metals used in jewelry and clothing clasps (Fig. 1) it is seen that ferric oxide, titanium oxide, zinc oxide, and pumice are harder . . . [Full Text PDF of this Article]

Footnotes
Received for publication April 27, 1957.

CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter     What's this?