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KMID : 0191120080230040734
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Journal of Korean Medical Science
2008 Volume.23 No. 4 p.734 ~ p.736
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Probable Case of Neuroleptic Malignant Syndrome Following Administration of Antituberculotic Drugs in a Chlorpromazine-Treated Patient
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Shim Geum-Sook
kwon Jun-Soo
Kang Do-Hyung
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Abstract
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Neuroleptic malignant syndrome (NMS), a potentially fatal adverse reaction to neuroleptics, is known to occur more often in the initial stage of antipsychotic treatment. We describe a patient with chronic schizophrenia who, in a few days after the addition of antituberculotic drugs to his antipsychotic regimen, developed probable NMS without pyrexia. We reasoned that rifampin, a strong hepatic enzyme inducer, decreased the plasma chlorpromazine concentration of the patient, with the result of cholinergic hyperactivity and finally, the symptoms of NMS. Therefore, physicians should be aware of drug interactions and the likelihood of NMS, and consider antipsychotic dose adjustment when prescribing drugs that may influence pharmacokinetic properties of antipsychotics in a patient with schizophrenia receiving long-term antipsychotic treatment.
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KEYWORD
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Neuroleptic Malignant Syndrome, Rifampin, Chlorpromazine
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