Isomorphic stimulus effect
The isomorphic stimulus effect (also known as the Koebner phenomenon , according to the dermatologist Heinrich Koebner ) describes changes in the skin ( efflorescences ) that occur in certain skin diseases minutes to possibly weeks after unspecific (mechanical, chemical or thermal) irritation in previously unchanged sections and those of the existing skin disease are equal (isomorphic).
The Köbner phenomenon is described, among other things, in:
- Allergic contact eczema ( Kogoj phenomenon )
- Lichen planus ( lichen )
- Lupus erythematosus ( butterfly lichen )
- Psoriasis ( psoriasis )
- Flat warts
- Vitiligo ( lichen )
literature
- AI Rubin, MJ Stiller: listing of skin conditions exhibiting the Koebner and pseudo-Koebner phenomena with eliciting stimuli. In: Journal of Cutaneous Medicine and Surgery . 2002 Jan-Feb; 6 (1), pp. 29-34. PMID 11896422 , doi: 10.1007 / s10227-001-0029-6
