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Psoriasis — SCE Dermatology MCQ

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HardInflammatory DermatosesPsoriasisSCE Dermatology

A psoriasiform eruption develops strictly within the dermatome of a previously healed herpes zoster infection, without new trauma. Which phenomenon is described?

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Correct answer: A — Wolf isotopic response

A Wolf isotopic response is a new, unrelated dermatosis arising at the site of a healed skin disease, classically after herpes zoster. Koebnerisation instead follows physical trauma in otherwise uninvolved skin.

Reference: https://academic.oup.com/bjd/pages/bad-guidelines