Early Intervention in Psychiatry
August 1, 2026
Anna Willert, Laura Von Hardenberg, Laura Holzner et al.
ABSTRACT Background Despite the high prevalence of comorbid cannabis use at first onset of psychotic symptoms, high transition rates from cannabis‐induced psychosis to schizophreniform psychoses and bipolar disorder, and evidence of cannabis use as a risk factor in developing primary psychosis, only a few studies have addressed the difficulties in differential diagnosis focusing on the early...
EClinicalMedicine
September 8, 2023
Mathilde Argote, Guillaume Sescousse, Jérôme Brunelin et al.
31 citations
Background: The association between cannabis use and positive symptoms in schizophrenia spectrum disorders is well documented, especially via meta-analyses. Yet, findings are inconsistent regarding negative symptoms, while other dimensions such as disorganization, depression, and excitement, have not been investigated. In addition, meta-analyses use aggregated data discarding important...
Psychiatry Research
August 23, 2020
Chloé de Vos, Karolina Leopold, Elisabeth S. Blanke et al.
Cannabis use is highly prevalent among young people diagnosed with first-episode psychosis (FEP), however, its impact on cognition is still unclear. The aim of the present study was to examine the association of cannabis use with cognition in people diagnosed with FEP. We extended previous research findings by operationalising the comorbid cannabis use, considering recency of cannabis use and...
Schizophrenia Bulletin
August 16, 2007
Barnaby Nelson, Alison R Yung, Andreas Bechdolf et al.
Recent years have witnessed widespread interest in the early phase of schizophrenia and other psychotic disorders. Strategies have been introduced to attempt to identify individuals in the prepsychotic or prodromal phase. The most widely used of these approaches is the ultra-high risk (UHR) approach, which combines known trait and state risk factors for psychotic disorder. However, researchers...