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[Allergic reactions to local anesthetics]
1Afdeling Arbeidsdermatologie/Dermato allergologie, Academisch Ziekenhuis Vrije Universiteit te Amsterdam, De Boelelaan 1117, 1081 HV Amsterdam.
Nederlands Tijdschrift Voor Tandheelkunde
|May 1, 1996
Summary
Allergic reactions to local anesthetics, including contact dermatitis and anaphylaxis, are discussed. While ester-type anesthetics like procaine often cause type IV reactions, amide-type anesthetics like lidocaine can rarely cause both type I and IV reactions. Many suspected reactions are not allergic.
Area of Science:
- Allergy and Immunology
- Pharmacology
- Dermatology
Context:
- Local anesthetics are widely used in medical procedures.
- Adverse reactions to local anesthetics can occur.
- Differentiating allergic from non-allergic reactions is crucial for patient safety.
Purpose:
- To discuss type I (anaphylactic) and type IV (contact dermatitis) allergic reactions to local anesthetics.
- To differentiate between ester-type and amide-type anesthetic allergies.
- To review diagnostic methods for local anesthetic allergy.
Summary:
- Type IV allergic reactions, primarily contact dermatitis, are commonly associated with ester-type local anesthetics (e.g., procaine).
- Amide-type local anesthetics (e.g., lidocaine) can rarely cause both type I anaphylactic and type IV contact dermatitis reactions.
- Diagnostic tools include intra- and epicutaneous testing, with provocation tests sometimes required. It is important to note that many reported reactions are not due to allergy.
Impact:
- Improved understanding of local anesthetic hypersensitivity.
- Guidance on accurate diagnosis and management of suspected allergic reactions.
- Reduced misdiagnosis of non-allergic adverse events as true allergies.