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Lukas Jörg1, Arthur Helbling1

  • 11 Allergologisch-Immunologische Poliklinik, Universitätsklinik für Rheumatologie, Immunologie und Allergologie, Inselspital, Universitätsspital Bern.

Therapeutische Umschau. Revue Therapeutique
|July 9, 2019
PubMed
Summary
This summary is machine-generated.

Many reported penicillin allergies are misdiagnosed side effects. Allergy workups, including provocation testing, are crucial to confirm true betalactam antibiotic allergies or allow necessary retreatment.

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Area of Science:

  • Clinical Immunology
  • Pharmacology
  • Infectious Diseases

Background:

  • Hypersensitivity reactions to betalactam antibiotics are frequently reported, with up to 10% of patients suspecting a penicillin allergy.
  • Antibiotic side effects are often misdiagnosed as allergies, leading to unnecessary avoidance of essential medications.
  • Many patients with suspected betalactam allergy can tolerate these antibiotics without adverse reactions.

Purpose of the Study:

  • To emphasize the importance of accurate allergy diagnosis in patients with suspected betalactam hypersensitivity.
  • To highlight the limitations of current diagnostic methods and the role of provocation testing.
  • To guide clinicians in managing suspected betalactam allergies and enabling safe retreatment.

Main Methods:

Related Experiment Videos

  • Review of diagnostic approaches for betalactam antibiotic hypersensitivity.
  • Discussion of the diagnostic value and limitations of skin and in-vitro tests.
  • Emphasis on the gold standard provocation test for allergy exclusion and cross-reactivity assessment.

    • Main Results:

    • Skin and in-vitro tests for betalactam allergy have reduced sensitivity, necessitating careful interpretation.
    • Provocation testing is the gold standard for confirming or excluding hypersensitivity and evaluating cross-reactivity.
    • Cross-reactions between penicillins and cephalosporins (especially later generations) are uncommon; carbapenem cross-reactions are rare.

    Conclusions:

    • Accurate allergy workup is essential to confirm true betalactam hypersensitivity or to re-enable treatment.
    • Provocation testing plays a critical role in definitively diagnosing or excluding betalactam allergies.
    • Misdiagnosis of allergy can lead to suboptimal patient care; precise diagnosis facilitates appropriate antibiotic use.