Tuberculosis of the skin presents a curious distributional pattern; it is common in Europe and uncommon elsewhere. One encounters only an occasional case in an American dermatologic clinic. No adequate recent estimates are to be found in textbooks or periodicals on dermatology of the frequency of cutaneous tuberculosis in general or of any of the various clinical forms in which it may manifest itself. An attempt is made in this article to determine its frequency in various countries and to compare these statistics with those at the Skin and Cancer Unit of the New York Post-Graduate Medical School and Hospital.
GENERAL INCIDENCE IN EUROPE
All recent reports from European dermatologic clinics estimate the frequency of cutaneous tuberculosis as between 1 and 3 per cent of the total number of cases observed. It is noteworthy that climate apparently does not influence its occurrence. From Edinburgh, Scotland, Aitken1 reported 0.6 to
GAHAN E. INCIDENCE OF TUBERCULOSIS OF THE SKIN. Arch Derm Syphilol. 1942;46(1):130–134. doi:10.1001/archderm.1942.01500130133012
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