Identifying robust markers for predicting the onset of psychosis has been a key challenge for early detection research. Persecutory delusions are core symptoms of psychosis, and social cognition is particularly impaired in first-episode psychosis patients and individuals at risk for developing psychosis. Here, we propose new avenues for translation provided by hierarchical Bayesian models of behaviour and neuroimaging data applied in the context of social learning to target persecutory delusions. As it comprises a mechanistic model embedded in neurophysiology, the findings of this approach may shed light onto inference and neurobiological causes of transition to psychosis.
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http://dx.doi.org/10.1038/s41380-019-0427-z | DOI Listing |
Psychiatry Res
January 2025
Department of Psychiatry, Faculty of Medicine and Health Sciences, McGill University, 1033 Pine Avenue West, Montreal, QC, , H3A 1A1, Canada; Prevention and Early Intervention Program for Psychosis, Douglas Mental Health University Institute, 6875 Blvd. LaSalle, Montreal, QC, , H4H 1R3, Canada. Electronic address:
Delusions are a defining feature of psychosis and play an important role in the conceptualization and diagnosis of psychotic disorders; however, the particular role that different delusions play in the prognosis of these disorders is not well understood. This study explored relationships between delusions and other symptoms in 674 first episode psychosis (FEP) individuals by comparing symptom networks between baseline and 12 months after intake to an early intervention service. Specifically, we (1) estimated regularized partial correlation networks at baseline and month 12, (2) identified the most central symptoms in each network, (3) identified clusters of highly connected symptoms, and (4) compared networks to examine changes in structure and connectivity.
View Article and Find Full Text PDFCureus
November 2024
Psychiatry, Maudsley Health, Al Amal Psychiatric Hospital, Dubai, ARE.
Schizophrenia is a chronic psychiatric disorder marked by severe disturbances in thought, perception, and behavior. Long-acting injectable (LAI) antipsychotics, such as paliperidone, are widely used to promote sustained remission and ensure medication adherence, especially in patients prone to relapse. However, the COVID-19 pandemic has introduced unique challenges, with studies indicating that infections like COVID-19 may exacerbate psychiatric symptoms through neuroinflammatory pathways.
View Article and Find Full Text PDFCureus
November 2024
Psychiatry and Psychotherapy Department, Klinikum Mutterhaus der Borromäerinnen, Trier, DEU.
Psychotic manifestations of iatrogenic origin are common in clinical practice, and it is essential to rule out organic and iatrogenic causes before attributing symptoms to psychiatric disorders. Bupropion, an atypical antidepressant used for treating depression and aiding smoking cessation, has been linked to rare instances of psychosis, especially in patients with risk factors like substance use, older age, or history of head trauma. This report describes the case of a 52-year-old man with recurrent depression who developed a bupropion-induced psychotic episode following an increase in dose to 300 mg/day.
View Article and Find Full Text PDFMol Psychiatry
December 2024
Ammon-Pinizzotto Center for Women's Mental Health, Massachusetts General Hospital, Boston, MA, USA.
Postpartum psychosis (PP) is a severe psychiatric disorder-with limited data or consensus on diagnostic criteria and clinical presentation-that affects thousands of people each year. The Massachusetts General Hospital Postpartum Psychosis Project (MGHP3) was established to: 1) describe the phenomenology of PP, and 2) identify genomic and clinical predictors in a large cohort. Results thus far point to a richer understanding of the heterogeneity and complexity of this often-misunderstood illness and its nature over time.
View Article and Find Full Text PDFNeurocase
October 2024
Faculté de médecine et de pharmacie de Casablanca, Université Hassan II de Casablanca, Casablanca, MA, Morocco.
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