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[Generalized pustulosis after leflunomide].

Sohrab Elahwiesy1, Jan-Christoph Simon2, Manfred Kunz2

  • 1Klinik und Poliklinik für Dermatologie, Venerologie und Allergologie, Universitätsklinikum Leipzig, Philipp-Rosenthal-Str. 23, 04103, Leipzig, Deutschland. Sohrab.Elahwiesy@medizin.uni-leipzig.de.

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Summary
This summary is machine-generated.

Leflunomide, an immunosuppressive drug, can trigger generalized pustular skin lesions. This reaction may mimic a severe flare of psoriasis or generalized pustular psoriasis.

Keywords:
Drug-related side effects and adverse reactionsIL-17A InhibitionImmunosuppressive agentsIsoxazole derivativePsoriasis

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Area of Science:

  • Immunology
  • Dermatology
  • Pharmacology

Background:

  • Leflunomide is an immunosuppressive isoxazole derivative.
  • It functions as a pyrimidine synthesis inhibitor.
  • Leflunomide inhibits tumor necrosis factor alpha (TNFα) signaling.

Purpose of the Study:

  • To report a case of generalized pustular skin lesions.
  • To describe the potential adverse effect of leflunomide.

Main Methods:

  • Case report.
  • Clinical observation of skin lesions.

Main Results:

  • Generalized pustular skin lesions developed after leflunomide intake.
  • The lesions resembled pustular exacerbation of pre-existing psoriasis.
  • The lesions also resembled generalized pustular psoriasis.

Conclusions:

  • Leflunomide can induce generalized pustular skin lesions.
  • This adverse reaction requires careful monitoring in patients.
  • Differential diagnosis between drug-induced lesions and psoriasis exacerbation is crucial.