Although it is only within comparatively recent times that asbestos has been considered an industrially hazardous material, "asbestosis" of the lungs is now an established disease entity with a characteristic pathologic picture.1 But as a cause of industrial dermatoses, asbestos has not been generally recognized as a precipitating factor. Derwitz2 seems to have been the first to recognize that the "warts" or "corns" occurring on the hands and feet of persons who worked with asbestos were of some medical significance. He reported the discovery of an "asbestos needle" in the cornified layers of characteristic small tubercles removed from the hands. He concluded that the "corns" he described are an industrial disability. Prosser White,3 apparently quoting Derwitz, mentioned that "asbestos fibres set up corns and warts when they enter the skin." In an exhaustive study of the asbestos industry and its hazards to health, Dreessen
ALDEN HS, HOWELL WM. THE ASBESTOS CORN. Arch Derm Syphilol. 1944;49(5):312–314. doi:10.1001/archderm.1944.01510110010003
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