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Case report
Case of relapsing sulfasalazine-induced hypersensitivity syndrome upon re-exposure
  1. Jason Winward1,
  2. Laurel Lyckholm1,
  3. Samuel M Brown2 and
  4. Mohamad Mokadem1
  1. 1Internal Medicine, Roy J and Lucille A Carver College of Medicine, The University of Iowa, Iowa City, Iowa, USA
  2. 2Internal Medicine–Division of Pulmonary and Critical Care Medicine, The University of Utah School of Medicine and Intermountain Medical Center, Salt Lake City, Utah, USA
  1. Correspondence to Dr Mohamad Mokadem; mohamad-mokadem{at}uiowa.edu

Abstract

Sulfasalazine-induced hypersensitivity syndrome (SIHS) is a serious systemic delayed adverse drug reaction that is associated with significant morbidity and mortality. Here, we report the first case, to our knowledge, of a patient with previously unidentified SIHS who developed a significantly more rapid and extreme recurrence on re-exposure to sulfasalazine. The patient is a 58-year-old woman with asymptomatic Crohn’s disease who, 10 days after initiating sulfasalazine, developed fevers, diffuse rash, pancytopenia, hypotension and hepatitis without a definitive source of infection. Sixteen days after her first hospitalisation, she was restarted on sulfasalazine and was readmitted within 10 hours with a similar but more serious presentation, requiring vasopressors. She did recover completely without any further recurrence to date, after definitively discontinuing sulfasalazine. This case demonstrates the importance of recognising SIHS early in patients to prevent re-exposure to sulfasalazine and to ensure timely initiation of appropriate treatment.

  • drugs and medicines
  • immunology
  • intensive care
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Footnotes

  • Contributors JW: drafted the manuscript. LL: provided input and revised the manuscript. SB: provided clinical care for the patient, input and revised the manuscript. MM: helped with drafting and critically revising the manuscript.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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