Koebner phenomenon

The Koebner phenomenon may result from either a linear exposure or irritation.

The Koebner phenomenon describes skin lesions which appear at the site of injury.

Sunburn can sometimes trigger psoriasis-an effect called the Koebner phenomenon.

He is best known for the eponymous Koebner phenomenon, also known as isomorphic phenomenon.

The linear arrangement of skin lesions in the Koebner phenomenon can be contrasted to both lines of Blaschko and dermatomal distributions.

The Koebner phenomenon, also called the "Koebner response" or the "isomorphic response", refers to skin lesions appearing on lines of trauma.

The Koebner phenomenon was named after a rather eccentric, renowned German dermatologist, Heinrich Koebner (1838-1904).

The Koebner phenomenon was the generalized term applied to his discovery that on psoriasis patients new lesions often appear on lines of trauma, which are often linear.

The Koebner phenomenon is the development of isomorphic pathologic lesions in the traumatized "uninvolved skin" of persons who have cutaneous diseases such as psoriasis.

Koebnerisin (S100A15) was first identified upregulated in inflammation-prone psoriatic skin, suggesting involvement in the lesional phenotype of the disease, Koebner phenomenon.

Psoriasis occurs more likely in dry skin than oily or well-moisturized skin, and specifically after an external skin injury such as a scratch or cut (see Koebner phenomenon).

Linear arrangements of these papules is common (referred to as a Koebner Phenomenon), especially on the forearms, but may occasionally be grouped, though not confluent, on flexural areas.

The cause of psoriasis is not fully understood, but it is believed to have a genetic component and local psoriatic changes can be triggered by an injury to the skin known as the Koebner phenomenon.

Causes of the Koebner phenomenon that are secondary to scratching rather than an infective or chemical cause include vitiligo, psoriasis, lichen planus, lichen nitidus, pityriasis rubra pilaris, and keratosis follicularis (Darier disease).

The University of Wisconsin, Madison: "Primary Care Dermatology Module Nomenclature of Skin Lesions: KOEBNER PHENOMENON."