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November 1961

Lichen Planus Erythematosus: Review, and Report of Two Cases

Author Affiliations


From the Department of Dermatology, Straub Clinic.

Arch Dermatol. 1961;84(5):741-749. doi:10.1001/archderm.1961.01580170035005

Crocker1 wrote in 1893:

A very rare variety [of lichen planus] of which I have seen 2 instances, is where the lesions are of a deep crimson tint, very soft to the touch instead of firm, and look more like an erythema than L. planus, as they can be temporarily obliterated on pressure, and the epidermis is evidently not involved. One case was a gentleman past middle age. The eruption had existed for a year, and was in closely aggregated, small papules, limited to the groins and large areas on the trunk. The other was not under my care, and the disease had been present for over 2 years, and was very extensive. There was also much telangiectasis of the face and mouth.

It does not appear from this note, which is reprinted in its entirety, that Crocker ever justified the diagnosis of lichen planus in these cases by