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Koebner's Phenomenon

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Updated January 24, 2010

Definition:

Occurs when trauma to the skin causes a skin lesion. The amount of trauma required can be very small -- sometimes just rubbing the skin can cause a lesion to develop.

Koebner's phenomenon is seen most often in psoriasis, eczema, lichen planus, and vitiligo.

Pronunciation: KOHB-ner
Also Known As: isomorphic phenomenon, isomorphic reaction
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