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Related Experiment Video

Updated: Apr 27, 2026

Basophil Activation Test for Allergy Diagnosis

Basophil Activation Test for Allergy Diagnosis

Published on: May 31, 2021

Antibiotic allergy.

Antonino Romano¹, Richard Warrington²

¹Department of Internal Medicine and Geriatrics, UCSC-Allergy Unit, Complesso Integrato Columbus, Via G. Moscati 31, Rome 00168, Italy.

Immunology and Allergy Clinics of North America

|July 15, 2014

Summary

This summary is machine-generated.

True antibiotic allergy is less common than claimed, with diagnosis complicated by varied reaction timings and mechanisms. Immediate reactions are often IgE-mediated, while later reactions involve complex immune responses, including T lymphocytes.

Keywords:

Allergy Antibiotics Drug Hypersensitivity Immediate Non-β-lactam Nonimmediate β-lactam

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Last Updated: Apr 27, 2026

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Published on: May 31, 2021

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Published on: January 8, 2014

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Published on: July 24, 2021

Area of Science:

Pharmacology
Immunology
Clinical Medicine

Background:

Antibiotic allergy is frequently reported but often inaccurately diagnosed.
Reactions to antibiotics vary significantly in onset time and underlying mechanisms.
Distinguishing true allergy from other adverse drug reactions is clinically challenging.

Purpose of the Study:

To clarify the diagnostic complexities of antibiotic allergy.
To differentiate mechanisms of immediate versus delayed antibiotic reactions.
To highlight the role of immune responses in antibiotic hypersensitivity.

Main Methods:

Classification of antibiotic reactions based on symptom onset interval.
Analysis of immunological pathways including IgE-mediated and cell-mediated responses.
Consideration of T lymphocyte involvement in delayed hypersensitivity.

Main Results:

Immediate antibiotic reactions (within 1 hour) are typically IgE-mediated or involve mast cell stimulation.
Delayed reactions (>1 hour) likely involve multiple mechanisms, including IgE and cell-mediated pathways.
Drug-specific T lymphocytes are implicated in cell-mediated antibiotic reactions.

Conclusions:

True antibiotic allergy is often overestimated.
Understanding reaction timing and immunological mechanisms is crucial for accurate diagnosis.
Diagnosis of antibiotic allergy requires careful evaluation of immune responses.