Allergies
Dental Management of Patients with Local anaesthetic allergy (reported)
Important — second opinion only. DentiCision provides an evidence-based second opinion to assist the dentist. It does not replace the treating dentist's professional clinical judgment or consultation with the patient's physician. The treating dentist retains full clinical, scientific and legal responsibility. Always verify drugs and doses against current guidelines.
Local anaesthetic 'allergy' — describe the previous reaction
True IgE-mediated allergy to amide local anaesthetics is very rare (<1% of reported reactions); most are vasovagal, adrenaline or excipient reactions. The type of previous reaction decides whether treatment can proceed.
Emergency vs routine management
If EMERGENCY — what to do
- • Manage pain/infection without injection where possible (analgesia, antibiotics if indicated, drainage without LA) or refer to hospital.
If ROUTINE — what to do
- • Describe the previous reaction to see the routine-care plan.
Clinical precautions
- • Have the anaphylaxis kit ready (adrenaline 0.5 mg IM, 1:1000) and record the exact agent, dose and reaction in the notes.
Information & tests to request
- • What happened with the previous local anaesthetic? — Fainting/palpitations are not allergy; skin, airway or circulatory signs need allergy testing before elective treatment.
At a glance by procedure
Initial assessment before lab results or timing details are entered.
| Procedure | Initial assessment |
|---|---|
| Examination / radiographs | MODIFY / CAUTION Local anaesthetic 'allergy' — describe the previous reaction |
| Supragingival scaling / polish | MODIFY / CAUTION Local anaesthetic 'allergy' — describe the previous reaction |
| Deep scaling / subgingival RSD (subgingival calculus) | MODIFY / CAUTION Local anaesthetic 'allergy' — describe the previous reaction |
| Root canal treatment | MODIFY / CAUTION Local anaesthetic 'allergy' — describe the previous reaction |
| Simple extraction (1–3 teeth) | MODIFY / CAUTION Local anaesthetic 'allergy' — describe the previous reaction |
| Surgical / bony extraction | MODIFY / CAUTION Local anaesthetic 'allergy' — describe the previous reaction |
| Implant placement | MODIFY / CAUTION Local anaesthetic 'allergy' — describe the previous reaction |
References
- Khan DA et al. Drug allergy: a 2022 practice parameter update (AAAAI/ACAAI). J Allergy Clin Immunol 2022;150:1333–1393 — local anaesthetics
- BSACI guidelines for the management of drug allergy (Mirakian et al., Clin Exp Allergy 2009) — skin testing & subcutaneous challenge
- Local anaesthetic allergy in dentistry — true IgE allergy <1% of reactions; most are vasovagal, adrenaline or excipient reactions (Br Dent J 2025)
- Resuscitation Council UK — Anaphylaxis: guidelines for healthcare providers (2021)
Related guides
Important — second opinion only. DentiCision provides an evidence-based second opinion to assist the dentist. It does not replace the treating dentist's professional clinical judgment or consultation with the patient's physician. The treating dentist retains full clinical, scientific and legal responsibility. Always verify drugs and doses against current guidelines.