John Libbey Eurotext

Olanzapine-related repetitive focal seizures with lingual dystonia Volume 18, issue 1, March 2016

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  • Olanzapine-related repetitive focal seizures with lingua dystonia

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  • Figure 1
Authors
SS Annunziata Hospital of Chieti- Neurology, Chieti, Abruzzo, Italy
* Correspondence: SS Annunziata Hospital of Chieti, Neurology, Via Dei Vestini, Chieti 66023, Italy

Olanzapine-related seizures have rarely been reported despite associated proconvulsant risk factors described in the literature: myoclonic status, increased frequency of seizures, tonic-clonic seizures, as well as fatal status epilepticus. We present a psychiatric patient who developed repetitive focal motor seizures and lingual dystonia when olanzapine was added for psychomotor agitation and aggressiveness. Olanzapine was immediately suspended and the seizures progressively disappeared. A control EEG showed no paroxysmal discharges. Olanzapine shares some pharmacological similarities with clozapine, a neuroleptic with a high risk of dose-dependent seizures. This adverse effect should be taken into account, and olanzapine should be used with caution if concomitant circumstances decrease the seizure threshold. [Published with video sequence online]