Lesions of the buccal mucous membrane are rarely found in cases of pityriasis rubra pilaris, and the classical authors, and many of those of the present day, either make no mention of such lesions or deny that they can occur.
A certain number of observations, some convincing and some less so, mention grayish or whitish taches on the buccal mucosa, resembling either syphilids or lichen planus.1 In Jordan's case (cited by Sutton and Sutton2) there were two whitish, linseed-size, raised lesions on the palate.
The buccal lesions in the present case differed from those previously described.
REPORT OF CASE
V. H., a white South African aged 27, complained of an eruption of one month's duration. Nothing significant was noted in his personal or family history.
He had a typical eruption of pityriasis rubra pilaris, with plaques of little hyperkeratotic papules on an erythematous background on the dorsa of