The Koebner phenomenon is the development of isomorphic pathologic lesions in the traumatized uninvolved skin of patients who have cutaneous diseases. It refers to the fact that in persons with certain skin diseases, especially psoriasis, trauma is followed by new lesions in the traumatized but otherwise normal skin, and these new lesions are clinically and histopathologically identical to thos...

Mycosis fungoides (MF) is the most frequent type of primary cutaneous T-cell/NK-cell lymphoma. The Koebner phenomenon is defined as the appearance of cutaneous lesions on previously noninvolved skin following trauma and is observed in a series of cutaneous diseases including psoriasis, lichen planus, viral warts, molluscum contagiosum, etc. In this case report, 3 patients with longstanding MF a...

Koebner phenomenon represents the development of several inflammatory skin lesions (psoriasis, lichen planus, vitiligo, etc.) in uninvolved skin following various traumatic insults. The case of a 27-year-old male patient with scalp psoriasis who was referred to our clinic for generalized psoriatic lesions developed two weeks after tattooing his skin at the age of 18 was presented; the case illu...

Koebner phenomenon, the appearance of preexisting skin lesions following trauma to previously uninvolved skin, has been seen frequently with vitiligo. The type of trauma leading to Koebner phenomenon can vary from scratching, surgical scars, radiotherapy, burns, irritation from drug use and laser therapy. Striae distensae are a form of injury to the skin and in this particular case resulted fro...