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Koebner phenomenonL40.9; L43.9

Author:Prof. Dr. med. Peter Altmeyer

Last updated on: 02.10.2022

Synonym(s)

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

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HistoryThis section has been translated automatically.

Köbner, 1876

DefinitionThis section has been translated automatically.

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/EpidemiologyThis section has been translated automatically.

Occurrence in the following diseases, among others:

Psoriasis vulgaris
lichen planus
Lichen nitidus
eruptive xanthomas
photoaggravated diseases (see below photoallergy)
Erythema exsudativum multiforme
Viral exanthema
reactive perforating collagenosis
Schönlein-Henoch purpura
drug exanthema
cytostatic-induced exanthema (e.g. bleomycin-induced: melanodermia factitia)
Vitiligo
relapsing sarcoidosis

LiteratureThis section has been translated automatically.

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

Authors

Last updated on: 02.10.2022

Author: Prof. Dr. med. Peter Altmeyer