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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Olanzapine-associated neuroleptic malignant syndrome in a patient receiving concomitant rivastigmine therapy.

Neuroleptic malignant syndrome (NMS) is an idiosyncratic and uncommon but serious adverse effect that has been reported with both typical and atypical antipsychotic agents. We describe a 58-year-old man with Down syndrome and dementia who was receiving low-dose olanzapine and rivastigmine therapy; he developed NMS 4 months after starting olanzapine. The patient presented with altered mental status, rigidity, fever, diaphoresis, and tremor, and his creatine kinase level was elevated. Olanzapine was discontinued, and the patient fully recovered; antipsychotic therapy was not restarted. Based on the Naranjo adverse drug reaction probability scale, olanzapine was the probable cause of the patient's NMS. In addition, use of rivastigmine in combination with olanzapine may have placed the patient at greater risk for NMS, possibly due to an acetylcholine-dopamine imbalance. Clinicians should be aware of the potential for NMS even with low doses of antipsychotics, particularly in patients who have a limited ability to communicate. Concomitant administration of cholinesterase inhibitors such as rivastigmine may represent an unrecognized risk factor for NMS development.[1]

References

  1. Olanzapine-associated neuroleptic malignant syndrome in a patient receiving concomitant rivastigmine therapy. Stevens, D.L., Lee, M.R., Padua, Y. Pharmacotherapy (2008) [Pubmed]
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