The name lichen nitidus was first applied by Pinkus,1 in 1901, to a peculiar eruption which somewhat resembled lichen planus, but differed mainly in that it gave rise to no subjective symptoms and was not at all prominent.
Pinkus reported nine cases of this condition, seven of which he described quite fully. In only one of these cases was the patient aware of the presence of the eruption. All were found in men suffering from some venereal affection, and in all but one the genitals were the seat of lichen nitidus lesions. Examination for the venereal condition revealing the presence of an eruption, which, giving no symptoms, had not been noticed.
This eruption consisted of small flat shiny polygonal or round papules, of the color of the surrounding skin or, in some instances, of a slightly dusky hue, varying from pinpoint to pinhead size.
They were closely packed together,
TRIMBLE WB, MALONEY ER. LICHEN NITIDUS: WITH A REPORT OF TWO CASES. Arch Derm Syphilol. 1923;7(4):452–461. doi:10.1001/archderm.1923.02360100025003
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