Paranoid psychosis and cognitive impairment associated with hepatitis C antiviral therapy
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OBJECTIVE: To report a case of paranoid psychosis and cognitive impairment associated with Hepatitis C virus (HCV) antiviral therapy. METHODS: Case report. RESULTS: A 55-year-old male presented with paranoid psychosis and cognitive impairment, 4 months after initiating interferon-based HCV antiviral therapy. His psychosis resolved with discontinuation of therapy and initiation of risperidone, but his cognitive impairment persisted. His psychosis also re-emerged months later when attempting to titrate down his risperidone. Brain MRI demonstrated bilateral asymmetric subcortical and deep white matter changes, which were non-specific but may have rendered him susceptible to neuropsychiatric sequelae of antiviral therapy. CONCLUSION: This case emphasizes the importance of neuropsychiatric screening and monitoring of patients being treated with interferon-based therapy for HCV, particularly if there is evidence of previous neurologic disease.
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