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June 1961

Extreme Hyperkeratotic Psoriasis in a Mongoloid: A Case Report

Author Affiliations


The Department of Dermatology and Syphilology of the New York University Post-Graduate Medical School and the Skin and Cancer Unit of University Hospital.

Arch Dermatol. 1961;83(6):973-976. doi:10.1001/archderm.1961.01580120085021

The purpose of this paper is to report a case of hyperkeratotic psoriasis in a mongoloid child and to review pertinent data concerning mongolism.

Incidence  Some 70 years ago a British physician, whose name we have not found recorded, observed that certain mentally retarded infants had slanting eyes and a flat nose resembling the features of the oriental Mongol. He therefore termed the affliction of these infants "mongolism." Mongolism comprises 5%-10% of all institutionalized mental defectives.1 It is present in 1 per 1,000 births to mothers in the age group between 30 to 40. The incidence, however, increases rapidly so that in the 45- to 49year-old age group there are 20 to 30 such cases per 1,000 births. The average age of women having a mongoloid child is 37, or 9 years older than the national average age of women having normal children.2 Leukemia, acute or subacute, is