What is the Koebner phenomenon? The Koebner phenomenon describes the appearance of new skin lesions of a pre-existing dermatosis on areas of cutaneous injury in otherwise healthy skin. It is also known as the Köbner phenomenon and isomorphic response.

Understanding the Context

If you have psoriasis, vitiligo or lichen planus and notice new skin lesions forming on an area of injured skin, you may have Koebner phenomenon. These lesions resemble your primary skin disease and may appear weeks after an injury. Koebner's phenomenon refers to raised skin lesions that develop in response to skin irritation. People with psoriasis or vitiligo have a higher risk of getting Koebner’s phenomenon.

Key Insights

Koebner phenomenon refers to the emergence of new psoriatic lesions in the healthy skin regions following an injury/trauma to psoriatic patients. The occurrence of psoriatic lesions at unusual areas of the body regions such as on penis, around eyes ... The Koebner phenomenon describes the formation of skin lesions on parts of the body where a person doesn’t typically experience lesions. This is also known as an isomorphic response. It’s long...

Final Thoughts

Here, we’ll look at the types and symptoms of the Koebner phenomenon, what causes it, how it’s treated, and what you can do to prevent it. Psoriasis: What is the Koebner phenomenon? The Koebner phenomenon is when a skin disorder, such as psoriasis, vitiligo, or lichen planus, occurs at the site of an injury on the skin. It may occur... The Koebner phenomenon (KP), first described in 1876 by Heinrich Koebner, is the appearance of new skin lesions on previously unaffected skin secondary to trauma.