Koebner phenomenon L40.9; L43.9

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

Coebnerisation; Irritation effect isomorphic; Isomorphic irritant effect; isomorphic phenomenon; Köbnern; Koebner phenomenon; Koebner sign

History
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Köbner, 1876

Definition
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New occurrence of lesions (isomorphism) belonging to the underlying disease in a previously mechanically, thermally or chemically irritated skin (e.g. scratch marks, burns, etc.).

Occurrence/Epidemiology
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Occurrence among others with the following diseases:

Literature
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  1. Köbner H (1872) On the etiology of psoriasis. Zschr Dermatol 8: 559-561

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Last updated on: 29.10.2020