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Chloroquine hypersensitivity syndrome.

Gise'le Kanny1, Jean Marie Renaudin, Thanh Lecompte

  • 1Department of Internal Medicine, Clinical Immunology and Allergy, University Hospital, Ho^pital Central, 29 avenue de Lattre de Tassigny, 54035 Cedex, Nancy, France

European Journal of Internal Medicine
|February 12, 2002
PubMed
Summary

This study details a rare case of delayed hypersensitivity syndrome caused by the antimalarial drug chloroquine. Symptoms included fever, digestive issues, skin rash, and eosinophilia, confirmed by patch testing.

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Area of Science:

  • Pharmacology
  • Clinical Medicine
  • Immunology

Background:

  • Chloroquine is a common antimalarial prophylaxis.
  • Drug-induced hypersensitivity syndromes are a concern in clinical practice.

Purpose of the Study:

  • To report the first documented case of delayed hypersensitivity syndrome attributed to chloroquine.
  • To highlight the clinical presentation and diagnostic confirmation of this adverse drug reaction.

Main Methods:

  • Detailed patient history including drug exposure.
  • Clinical examination for characteristic symptoms (fever, digestive, bullous eruption, eosinophilia).
  • Diagnostic confirmation via chloroquine patch testing.

Main Results:

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  • The patient presented with fever, digestive symptoms, bullous eruption, and eosinophilia.
  • A positive patch-test confirmed chloroquine as the causative agent.
  • This represents the first reported instance of delayed hypersensitivity syndrome linked to chloroquine.

    • Conclusions:

    • Chloroquine can induce delayed hypersensitivity syndrome.
    • Clinical vigilance and patch testing are crucial for diagnosing chloroquine-induced hypersensitivity.