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Related Experiment Videos

[Lyell syndrome associated with lamotrigine].

C Fernández-Calvo1, J Olascoaga, A Resano

  • 1Servicio de Medicina Interna, Hospital de Guipúzcoa, San Sebastián, Guipúzcoa, España.

Revista De Neurologia
|February 24, 2001
PubMed
Summary

Lamotrigine (LTG) can cause severe skin reactions like Lyell syndrome, especially when combined with valproate (VPA). Patients should stop LTG immediately if any rash appears to prevent serious adverse effects.

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Area of Science:

  • Pharmacology
  • Dermatology
  • Neurology

Background:

  • Lamotrigine (LTG) is a widely used antiepileptic drug for partial and generalized seizures.
  • Adverse effects include rashes, with rare but severe cases of Stevens-Johnson syndrome and Lyell syndrome (toxic epidermal necrolysis), particularly when co-administered with valproate (VPA).

Observation:

  • A patient on valproate (VPA) for epilepsy developed neutropenia and was switched to lamotrigine (LTG) with a dose-escalation strategy.
  • Within six weeks, the patient developed an erythematous rash, which worsened after sun exposure, leading to symptoms indicative of Lyell syndrome, including epidermal detachment and mucous membrane lesions.

Findings:

  • The clinical presentation and positive Nikolsky sign confirmed a diagnosis of Lyell syndrome.
  • The patient's condition gradually improved with supportive care, including serum therapy, antibiotics, corticosteroids, and topical treatments.

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Implications:

  • This case highlights the potential for severe cutaneous adverse reactions associated with lamotrigine (LTG).
  • Healthcare providers should exercise caution when prescribing LTG, especially in combination with VPA.
  • Patients should be advised to discontinue LTG at the earliest sign of a rash to mitigate the risk of severe dermatological events.