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A Case for Diagnosis. Presented by Dr. Schiller and Dr. Schlegelmilch.
B. B., a boy, aged 11, presented a nonpruritic eruption of seven months' duration on the forearms, back, thighs and legs. There were a large number of somewhat depigmented medium to large coin-sized circular and oval patches, sharply outlined and composed of tiny, scale-capped, follicular papules. Some of the patches had become erythematous during the period of observation, and all were devoid of hair.
Dr. Schlegelmilch: There are signs of dermatophytosis about the toes.Dr. Wile: This peculiar eruption is probably not of vegetable parasitic origin. It is composed of pinkish, follicular, hyperkeratotis lesions, and it may be an unusual case of lichen scrofulosorum or possibly pityriasis rubra pilaris. A diagnosis of dermatophytosis would be easy to prove.Dr. Parkhurst: I favor a diagnosis of pityriasis rubra pilaris, although the configuration of the patches and the involvement of
Bartholomew HS. DETROIT DERMATOLOGICAL SOCIETY. Arch Derm Syphilol. 1928;17(3):422–426. doi:10.1001/archderm.1928.02380090139016
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