Cannabis use is more prevalent among youth at clinical high-risk (CHR) for psychosis than healthy controls (HC). There is mixed evidence as to whether cannabis use is associated with increased severity of attenuated psychotic symptoms (APS) or whether current cannabis use is associated with the transition to psychosis. This study aims to assess cannabis use differences between CHR youth and HC...
More than 100 years of retrospective studies show that psychosis is usually preceded by a prodrome. Nonspecific symptoms such as anxiety and depression precede more specific negative and attenuated positive symptoms. Prospective diagnostic criteria have been developed based on the retrospective work. The prospective criteria have shown high reliability in the research context, and follow-up...