Scalp paradoxical psoriasis during treatment with secukinumab

Authors

  • Virginia Llanos National University of Rosario, Rosario, Santa Fe, Argentina
  • Ramón Fernández Bussy Centenario Hospital of Rosario, Rosario, Santa Fe, Argentina
  • Micaela Otal Centenario Hospital of Rosario, Rosario, Santa Fe, Argentina
  • Mario Gorosito National University of Rosario, Rosario, Santa Fe, Argentina
  • Ana Gabriela Molteni Centenario Hospital of Rosario, Rosario, Santa Fe, Argentina

DOI:

https://doi.org/10.47196/hpc17e61

Keywords:

paradoxical psoriasiform reactions, scalp, psoriasis, hidradenitis suppurativa, adalimumab, secukinumab

Abstract

Paradoxical psoriasiform reactions include new cases or worsening of psoriasis, during treatment with biologic agents. Anti TNF-α drugs, including adalimumab, are the most common triggers for these reactions. The disruption of the balance between TNF-α and interferon-α would be key in its etiopathogenesis. However, involvement of the IL-23/IL-17 axis has also been observed, and other agents, such as secukinumab, have been implicated in the development of these reactions. We report the case of a patient with hidradenitis suppurativa receiving secukinumab who developed a paradoxical psoriasiform reaction on the scalp.

Author Biographies

  • Virginia Llanos, National University of Rosario, Rosario, Santa Fe, Argentina

    Resident Physician in the University Specialization Program in Dermatology

  • Ramón Fernández Bussy, Centenario Hospital of Rosario, Rosario, Santa Fe, Argentina

    Physician, Department of Dermatology

  • Micaela Otal, Centenario Hospital of Rosario, Rosario, Santa Fe, Argentina

    Physician, Department of Dermatology

  • Mario Gorosito, National University of Rosario, Rosario, Santa Fe, Argentina

    Pathologist, Department of Pathology

  • Ana Gabriela Molteni, Centenario Hospital of Rosario, Rosario, Santa Fe, Argentina

    Professor and Head of the Department of Dermatology, National University of Rosario; Head of the Dermatology Service

References

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Published

2026-07-16

Issue

Section

Clinical Cases