Koebner's phenomenon


Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.
Related to Koebner's phenomenon: lichen planus, isomorphic response, Auspitz sign

Koebner's phenomenon

Isomorphic reaction The appearance of new lesions of a skin disease–in particular psoriasis, but also lichen planus or eczema at a site of trauma. See Id reaction, Psoriasis.
References in periodicals archive ?
Any form of trauma results in psoriasis appearing in the traumatized areas known as Koebner's phenomenon.9 Koebner's phenomenon occurs only at certain times in the lives of-the persons with psoriasis.