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Toxic epidermal caused by lamotrigine.
Mike Sladden1, Neil Mortimer, Toby Chave
1Department of Dermatology, Leicester Royal Infirmary, United Kingdom. m.sladden@doctors.org.uk
Australian Family Physician
|November 10, 2004
Summary
Lamotrigine can cause severe skin reactions like toxic epidermal necrolysis (TEN), a rare but dangerous adverse drug effect. Careful dosing and monitoring are crucial when initiating lamotrigine treatment.
Area of Science:
- Pharmacovigilance
- Dermatology
- Neurology
Background:
- Lamotrigine use is increasing for epilepsy and mood stabilization.
- It is considered for pregnant women with epilepsy.
- General practitioners frequently prescribe lamotrigine.
Observation:
- Two patients developed oral lesions and extensive rash after starting lamotrigine.
- These reactions occurred shortly after treatment initiation.
Findings:
- Lamotrigine can cause simple maculopapular rashes.
- Rarely, severe mucocutaneous reactions, including toxic epidermal necrolysis (TEN), can occur.
- TEN is a potentially fatal adverse mucocutaneous drug reaction.
Implications:
- Early recognition of lamotrigine-induced skin reactions is vital.
- Minimizing risk involves slow dose titration and avoiding concurrent sodium valproate.
- Awareness of TEN risk is crucial for safe lamotrigine prescribing.