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Article
February 1940

PITYRIASIS ROSEAREVIEW OF THE LITERATURE AND REPORT OF TWO HUNDRED AND NINETEEN CASES, IN THIRTY-EIGHT OF WHICH CONVALESCENT SERUM WAS USED

Author Affiliations

NEW YORK

From the Skin and Cancer Unit of the New York Post-Graduate Medical School and Hospital, Columbia University.

Arch Derm Syphilol. 1940;41(2):265-294. doi:10.1001/archderm.1940.01490080074005
Abstract

I. INCIDENCE  Nékám1 observed pityriasis rosea in 4 per cent of 100,000 cases of cutaneous disease, while Stelwagon,2 in 123,746 cases collected by the American Dermatological Association from 1878 to 1887, found the disease in only 0.057 per cent. MacLeod3 found 3 cases of pityriasis rosea per thousand cases of cutaneous diseases in children under 14 years of age observed at the Victoria Hospital. Graham Little4 saw 6.7 cases per thousand in a dermatologic clinic for adults and children and 4.7 per thousand in a children's clinic. Benedek5 quoted statistics from thirteen authors. The frequency of pityriasis rosea in Leipzig was 0.52 per hundred and in Vienna, 1.67 per hundred cases of cutaneous diseases. The frequency index (cases per month) was 0.54 for New York city and 9.7 for Berlin. Bolam3 found that pityriasis rosea comprised 0.3 per cent of all dermatoses; Crocker,6

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