Related Experiment Videos
Lamotrigine-induced severe cutaneous adverse reactions
R G Schlienger1, L E Shapiro, N H Shear
1Division of Clinical Pharmacology, Sunnybrook Health Science Centre, University of Toronto, Ontario, Canada.
Epilepsia
|November 3, 1998
Summary
Severe cutaneous reactions like Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) from lamotrigine (LTG) share similar characteristics. These reactions may also indicate lamotrigine-induced antiepileptic drug hypersensitivity syndrome (AHS).
Area of Science:
- Pharmacovigilance
- Dermatology
- Neurology
Background:
- Severe cutaneous adverse reactions (SCARs), including Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN), are serious potential side effects of antiepileptic drugs (AEDs).
- Lamotrigine (LTG) is a widely used AED, and understanding its association with SCARs is crucial for patient safety.
Purpose of the Study:
- To systematically review and analyze published and unpublished cases of SJS/TEN associated with lamotrigine (LTG) therapy.
- To identify the key characteristics of these severe cutaneous reactions.
Main Methods:
- Conducted a comprehensive literature search of MEDLINE and tracked citations for published reports.
- Requested unpublished case reports from the Uppsala Monitoring Centre of the World Health Organization (WHO).
- Included cases where the causal relationship between LTG and SJS/TEN was assessed as possible, probable, or definite.
Main Results:
- Identified 57 cases of LTG-associated SJS/TEN (43 SJS, 14 TEN), with only 23% published.
- SJS cases involved significantly younger patients (median 21 years) compared to TEN cases (median 31 years).
- Median time to onset (17 days) and median dosage at onset (50 mg) did not significantly differ between SJS and TEN. Concomitant valproate (VPA) use was frequent (74% in SJS, 64% in TEN).
- TEN was identified as a manifestation of antiepileptic drug hypersensitivity syndrome (AHS) in three cases.
Conclusions:
- Key features of lamotrigine-induced SJS and TEN, including dosage, onset, and concurrent valproate use, do not substantially differ.
- Severe cutaneous reactions to lamotrigine can be manifestations of lamotrigine-induced antiepileptic drug hypersensitivity syndrome (AHS).
- Further epidemiological studies are necessary to determine the incidence and comparative risk of severe LTG-induced cutaneous adverse reactions versus other AEDs.