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Insomnia as a predictor for symptom worsening following antipsychotic withdrawal in schizophrenia
Journal article   Peer reviewed

Insomnia as a predictor for symptom worsening following antipsychotic withdrawal in schizophrenia

Eran Chemerinski, Beng-Choon Ho, Michael Flaum, Stephan Arndt, Frank Fleming and Nancy C Andreasen
Comprehensive psychiatry, Vol.43(5), pp.393-396
09/2002
DOI: 10.1053/comp.2002.34627
PMID: 12216015

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Abstract

Sleep disturbances have been associated with schizophrenia, and are an especially prominent feature during the prodrome preceding psychotic relapse. In this study, we examined the changes in sleep quality following withdrawal of antipsychotic treatment, as well as the predictive value of sleep disturbances on symptom exacerbation. One hundred twenty-two patients with schizophrenia, schizophreniform disorder, or schizoaffective disorder underwent a 3-week medication wash-out prior to neuroimaging studies. Sleep quality was rated using items on the Hamilton Rating Scale for Depression (HAM-D), while symptom severity was measured using the Scale for the Assessment of Negative Symptoms (SANS) and the Scale for the Assessment of Positive Symptoms (SAPS). Sleep quality deteriorated progressively following antipsychotic discontinuation. Total insomnia score prior to antipsychotic withdrawal had a significant effect on the severity of psychotic symptoms at the last weekly assessment, while baseline terminal insomnia had a significant effect on disorganized symptoms at the end of the medication-free period. These findings were independent of baseline symptom severity. Our findings suggest that schizophrenia patients with sleep disturbances are at a greater risk for worsening of positive symptoms after antipsychotic discontinuation. The implications of these findings in research and clinical settings are discussed.
Severity of Illness Index Sleep Initiation and Maintenance Disorders - etiology Antipsychotic Agents - adverse effects Humans Male Schizophrenia - complications Sleep - drug effects Antipsychotic Agents - administration & dosage Psychiatric Status Rating Scales Adult Female Schizophrenia - drug therapy Substance Withdrawal Syndrome - physiopathology Substance Withdrawal Syndrome - psychology

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