Reduction of Psychosis Proneness in a Daycare Hospital Program for Patients with Severe Alcohol Use Disorder.

Objectives: Anxiety and depressive symptoms, as well as cognitive dysfunctions, improve with abstinence in individuals with alcohol use disorders (AUD), but less is known about psychotic features. The objective of this study was to evaluate the psychosis proneness in a sample of individuals with severe AUD and potential changes after alcohol withdrawal.

Method: An observational study was conducted, assessing prospectively Peter's Delusional Inventory scale (PDI); anxiety and depression symptoms by MADRS and cognitive functioning by the MoCA at entry in daycare hospital (D0) and after 30 days (D30). Individuals with schizophrenia, chronic delusional disorder and bipolar disorder were excluded. Wilcoxon tests were used to evaluate the evolution between D0 and D30, and linear regressions were conducted to test the association between delta PDI and the variables that could be potential confounders.

Results: Forty individuals (72% males) with a mean age of 50 ± 9 years old and AUD evolved for 15 ± 11 years were included. After one month, PDI score decreased significantly ( = .001), and several biological and clinical parameters improved significantly with abstinence or consumption reduction: GGT ( = .003), MoCA ( < .001), MADRS ( = .047).

Conclusion: We observed a decrease in delusional thinking along abstinence and/or consumption reduction. To our knowledge, this is the first research to study psychosis proneness evolution in patients with severe AUD. Replications are required in independent samples with larger sample size.