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  • Title: Association of subjective cognitive dysfunction with akathisia in patients receiving stable doses of risperidone or haloperidol.
    Author: Kim JH, Byun HJ.
    Journal: J Clin Pharm Ther; 2007 Oct; 32(5):461-7. PubMed ID: 17875112.
    Abstract:
    BACKGROUND AND OBJECTIVE: Antipsychotic-induced akathisia leads to poor compliance with medication and is still a source of concern in the treatment with antipsychotic drugs. Regarding clinical characteristics, the distinguishing features of akathisia in comparison with other extrapyramidal syndromes are prominent subjective symptoms. The purpose of the present study was to examine the subjective cognitive dysfunction associated with antipsychotic-induced akathisia. METHODS: Sixty-seven outpatients with schizophrenia receiving stable doses of risperidone or haloperidol were evaluated for akathisia and other extrapyramidal side effects. Subjective cognitive dysfunction was comprehensively assessed using the Frankfurt Complaint Questionnaire (FCQ). The severity of subjective cognitive deficits was compared between the groups with and without akathisia using analysis of covariance with relevant variables as covariates. RESULTS: The akathisia group (n = 25) scored significantly higher on the total FCQ score than the non-akathisia group (n = 42) (P < 0.05). In phenomenological subscale scores, the akathisia group had significantly higher scores on various subscales, i.e. 'anxiety', 'disorder of selective attention', 'deterioration of discrimination', 'perceptual disorder' and 'disorder of coping responses' than the non-akathisia group (P < 0.05). CONCLUSIONS: These results suggest that akathisia is significantly associated with a variety of subjective cognitive-perceptual deficits. Early therapeutic interventions for akathisia should be performed considering its significant association with the subjective cognitive dysfunction and the impairment of coping responses.
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