Li, LM;
Russo, M;
ODonoghue, MF;
Duncan, JS;
Sander, JWAS;
(1996)
Allergic skin rash with lamotrigine and concomitant valproate therapy - Evidence for an increased risk.
ARQ NEURO-PSIQUIAT
, 54
(1)
47 - 49.
10.1590/S0004-282X1996000100008.
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Abstract
Cutaneous rash is one of the commonest adverse events associated with lamotrigine. We assessed whether the risk is increased in patients receiving concomitant valproate therapy in a population of 103 adult patients with intractable epilepsy, who had lamotrigine added to their treatment. Of the 33 patients taking valproate, 10 (30%) developed a rash, whilst of the 70 not taking valproate, only 6 (8%) developed a rash. This suggests a significantly higher risk of cutaneous rash when starting lamotrigine in patients already taking valproate (p<0.02).
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