Koebner phenomenon Images
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Koebner phenomenon: arrangement of pllanic warts in scratch marks.

Köbner phenomenon: Striped, red papules of the lichen planus in the area of the wrist bend, appearing within cat scratch marks (isomorphic irritant effect) in a 43-year-old man.

Koebner phenomenon in reactive, perforating collagenosis; striped arrangement of the papules after scratching effects.

Koebner phenomenon. isomorphic irritant effect in psoriasis vulgaris. striped plaques and linearly arranged psoriatic papules that have formed in scratch marks.

Koebner phenomenon in leukocytoclastic vasculitis. the Koebner phenomenon is caused by scratching several days ago. histologically, the same leukocytoclastic changes were observed as in the non-mechanically induced lesions.

Koebner phenomenon - Eruptive xanthomes: Linear arrangement of reddish-brown papules as an expression of the Koebner phenomenon.

Köbner phenomenon. isomorphic irritant effect in vasculitis allergica. disseminated, partly also flat, non-anemiable, reddish or brownish spots, papules and plaques on the lower leg of a 41-year-old man, which occurred after intramuscular injection of a non-steroidal anti-inflammatory agent. clear edema of the lower leg during the relapse activity of the vasculitis bds.

Koebner phenomenon. red, partly confluent red papules and plaques on the back of a 28-year-old psoriatic woman, disseminatedafter mechanical irritation caused by wearing a bra during beach volleyball. a strip-shaped flat plaque appears along the belt line on the lower back after wearing a tight belt.



Köbner phenomenon in erythema exsudativum multiforme.


Pemphigus erythematosus (state after UV-provocation): since about 2 years recurrent, symmetrical skin changes localized in the seborrheic areas. After pretreatment flat depigmentations so oral, scaly palques. On the lower left side the UV-provoked square area (isomorphic irritant effect).


