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Article
November 1939

CHICAGO DERMATOLOGICAL SOCIETY

Arch Derm Syphilol. 1939;40(5):825-839. doi:10.1001/archderm.1939.01490050141015

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Abstract

Tar Melanosis and Parapsoriasis en Plaques (Brocq). Presented by Dr. Harry R. Foerster, Milwaukee.  M. L., a white man aged 34, a trucking foreman, is presented because of two apparently unrelated dermatoses, a pigmentary disorder of the face and an inflammatory eruption on the trunk and extremities. He has been aware of pronounced tanning of the face for about ten years, which he attributed to his outdoor work and an observed susceptibility to sunburn, but the present intense slate gray to brown mottled pigmentation of the face was not definitely observed or commented on until two years ago, after trucking operations in conjunction with the repair of a black top road with a mixture of gravel and road tar. He does not recall other contacts with tar, pitch, coal or oil but has worked in a sulfur and lead mining district. The recent pigmentary disorder of the face was first

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