Allergy to beta-lactams in pediatrics: a practical approach
Nelson A Rosário1, Anete Sevciovic Grumach
1Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil. nelson.rosario@ufpr.br
Jornal De Pediatria
|December 1, 2006
Summary
Accurate diagnosis of penicillin allergy is crucial. Correctly identifying beta-lactam antibiotic allergies helps avoid unnecessary drug exclusions and reduces hypersensitivity risks.
Area of Science:
- Clinical Immunology
- Pharmacology
- Dermatology
Background:
- Penicillin allergy is frequently reported, often leading to avoidance of this essential antibiotic.
- Approximately 10% of reported penicillin allergies are confirmed upon investigation.
- Clinical reactions to penicillin vary widely, with skin disorders being common.
Purpose of the Study:
- To provide a practical framework for diagnosing and managing beta-lactam antibiotic allergies.
- To improve the recognition of true penicillin allergies and guide appropriate therapeutic choices.
Main Methods:
- Literature review of allergy journals indexed in MEDLINE and LILACS.
- Inclusion of seminal studies and relevant textbooks on antibiotic allergy.
Main Results:
- Allergic reactions involve Gell & Coombs' hypersensitivity mechanisms.
- Penicillin degradation yields major (95%) and minor (5%) determinants.
- Immediate IgE-mediated anaphylaxis is linked to minor determinants in 95% of cases.
- Cutaneous testing with determinants can assess hypersensitivity and prevent anaphylaxis.
Conclusions:
- Misdiagnosis of penicillin allergy leads to suboptimal therapeutic decisions.
- Improved diagnostic accuracy enables safe penicillin use and minimizes hypersensitivity risks.
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