The isomorphic phenomenon of Koebner

Indian Journal of Dermatology, Venereology and Leprology | May 1, 2004| | Copyright

The Koebner (isomorphic) phenomenon (response) is probably one of the most well known phenomena in dermatology and is named after the man who was the first to describe it.[1] The isomorphic phenomenon is now well documented in a number of skin diseases.

Definition

The Koebner phenomenon is the development of isomorphic pathologic lesions in the traumatized uninvolved skin of patients who have cutaneous diseases.[2] It refers to the fact that in persons with certain skin diseases, especially psoriasis, trauma is followed by new lesions in the traumatized but otherwise normal skin, and these ...

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