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Updated: Oct 10, 2025

The Goeckerman Regimen for the Treatment of Moderate to Severe Psoriasis
Published on: July 11, 2013
Exacerbation of generalized plaque psoriasis after tuberculin test
Alberto Corrà1, Lavinia Quintarelli1, Alice Verdelli2
1Section of Dermatology, Department of Health Sciences, University of Florence.
Abstract:
Koebner phenomenon, also known as isomorphic response, is the appearance of active skin lesions in sites of epidermal injury. This manifestation is characteristic of different dermatological diseases, such as lichen planus, vitiligo and psoriasis. We present the case of a psoriatic patient who experienced Koebner phenomenon after Mantoux test, followed by eruption of generalized plaque psoriasis.
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