Olanzapine Induced Somnambulism: A Case Report

Yap Kaysen, Ng Vi Vien


Parasomnia is a disorder of arousal that can be classified as either non-rapid eye movement (NREM) or rapid eye movement (REM) parasomnia. Somnambulism is an example of NREM parasomnia. There are observations that suggest a complex association between parasomnia, co-morbid mental illness and use of antipsychotics. In this case report, we observe the possibility of Olanzapine-induced somnambulism in a patient with schizophrenia and the resolution of somnambulism after Olanzapine was withdrawn.

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Olanzapine; Somnambulism; Sleep Walking

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