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Visual Treats in Dermatology
2024
:4;
9
doi:
10.25259/CSDM_2_2024

Psoriatic lesions at the site of recent tattoo - Koebner phenomenon

Department of Dermatology and Venereology, Government Medical College, Thiruvananthapuram, Kerala, India.
Department of Dermatology, Government T. D. Medical College, Alappuzha, Kerala, India.

*Corresponding author: Pradeep S. Nair, Department of Dermatology and Venereology, Government Medical College, Thiruvananthapuram, Kerala, India. dvmchtvm@yahoo.co.in

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This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-Share Alike 4.0 License, which allows others to remix, transform, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.

How to cite this article: Nair PS, Kabilan T. Psoriatic lesions at the site of recent tattoo - Koebner phenomenon. CosmoDerma. 2024;4:9. doi: 10.25259/CSDM_2_2024

A 32-year-old male with a history of scalp psoriasis on coal tar lotion, had undergone recently a tattoo procedure at a parlor. Two months later, the patient noticed scaly lesions at the site of the tattoo. On examination, there was a black tattoo of a bird on the left flexural aspect of the forearm studded with multiple plaques with silvery white scales confined only to the tattoo areas [Figure 1]. There were no similar skin lesions elsewhere on the body, and the patient did not have any scars elsewhere. There were no skin lesions elsewhere. Auspitz sign was positive. Skin biopsy showed bulbous acanthosis with spongiform pustule diagnostic of psoriasis. In tattooing, the needle is usually inserted in the upper dermis, and consequently this has elicited a Koebner phenomenon in our patient precipitating psoriasis. Dermal trauma induced by tattooing may trigger cytokines such as tumor necrosis factor-alpha, interleukin-1, and interleukin-6, which in turn upregulates nerve growth factor, an important chemokine in the pathogenesis of psoriasis, causing an inflammatory cascade leading to the formation of psoriatic lesions.[1]

Scaly plaques of psoriasis confined only to the tattoo area.
Figure 1:
Scaly plaques of psoriasis confined only to the tattoo area.

Ethical approval

Institutional Review Board approval is not required.

Declaration of patient consent

The authors certify that they have obtained all appropriate patient consent.

Conflicts of interest

There are no conflicts of interest.

Use of artificial intelligence (AI)-assisted technology for manuscript preparation

The authors confirm that there was no use of artificial intelligence (AI)-assisted technology for assisting in the writing or editing of the manuscript and no images were manipulated using AI.

Financial support and sponsorship

Nil.

References

  1. , , . Revisiting the Koebner phenomenon. Am J Pathol. 2008;172:961-71.
    [CrossRef] [PubMed] [Google Scholar]

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