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We describe a patient treated with trazodone,isocarboxazid,and methylphenidate hydrochloride who developed confusion,agitation,poor concentration,rigidity,myoclonus,involuntary movements,orthostatic hypotension,and hyperreflexia.CK was normal,and the syndrome resolved spontaneously over 12 hours.The serotonin syndrome occurs following the use of serotomimetic agents(serotonin reuptake inhibitors,tricyclic and tetracyclic antidepressants,trytophan,3,4-methylenedioxy-methamphetamine, dextromethorphan,meperidine,S-adenosylmethionine)alone or in combination with monoamine osidase inhibitors.It is characterized by various combinations of myoclonus,rigidity,hyperreflexia,shivering,confusion, agitation,restlessness,coma,autonomic instability,low-grade fever,nausea, diarrhea,diaphoresis,flushing,and,rarely,rhabdomyolysis and death. |
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