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August 1950


Author Affiliations


From the Department of Dermatology and Syphilology, Graduate School of Medicine, University of Pennsylvania, Philadelphia, Herman Beerman, M.D., chairman, and the Pennhurst State School, Spring City, Pa., Thomas Butter-worth, M.D., consultant in dermatology.

Arch Derm Syphilol. 1950;62(2):305-313. doi:10.1001/archderm.1950.01530150127016

DURING the past fifteen years we have observed at the Pennhurst State School for feebleminded persons a group of patients exhibiting an asymptomatic follicular hyperkeratosis scattered diffusely over the dorsum of the trunk but usually without involvement of the extensor surfaces of the extremities. Although various diagnoses have been considered from time to time, therapeutic measures attempted have proved futile. Recent intensive study of the 10 patients with this condition in the institution at the time of writing led us to the conclusion that we were dealing with an atypical manifestation of keratosis pilaris. This group represents less than 0.5 per cent of the total number of patients in the institution. All the patients whose cases are reported were morons or imbeciles, but there was no correlation between the degree of mental deficiency and the intensity of the skin condition. We do not know whether this process is

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