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LATE NINETEENTH CENTURY GERMAN DERMATOLOGY

Heinrich Koebner ( 1838-1904), left, with his friend Jonathan Hutchinson (1828-1913) at the 1892 meeting of the International Congress of Dermatology in Vienna.

Below: Translation of Koebner's classic description of his phenomenon as it was reported in the reference cited above. It was included in an address on the cause of psoriasis delivered by Koebner before the Silesian Society for National Culture.