Koebner reaction in lichen planus

Patients with lichen planus can exhibit the Koebner reaction, in which lesions develop in areas of trauma. In this patient, the Koebner reaction resulted from scratching.

Reproduced with permission from: Goodheart, HP. Goodheart's Photoguide of Common Skin Disorders, 2nd ed, Lippincott Williams & Wilkins, Philadelphia 2003. Copyright © 2003 Lippincott Williams & Wilkins.

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