Some people who experience substance-induced psychosis later develop an enduring
psychotic disorder such as schizophrenia. This study examines the proportion of people with …

Abstract Background: Validity of current International Classification of Disease/Diagnostic
and Statistical Manual of Mental Disorders (ICD/DSM) first episode psychosis diagnoses is …

Abstract Treatment and prevention studies over the past decade have enrolled patients
believed to be at risk for future psychosis. These patients were considered at risk for …

Background: Short-lived psychotic disorders are currently classified under “acute and
transient psychotic disorders”(ATPDs) in ICD-10, and “brief psychotic disorder”(BPD) in DSM …

Objective: Diagnostic shifts have been prospectively examined in the short term, but the long-
term stability of diagnoses has rarely been evaluated. The authors examined diagnostic …

Objective: Since stability of DSM-IV diagnoses of disorders with psychotic features requires
validation, we evaluated psychotic patients followed systematically in the McLean-Harvard …

Background The extent to which socio-demographic, clinical, and premorbid adjustment
variables contribute to cognitive deficits in first-episode schizophrenia spectrum disorders …

Objective: Because clinical and biologic research and optimal clinical practice require
stability of diagnoses over time, we determined stability of ICD-10 psychotic disorder …

BackgroundThe diagnostic category of acute and transient psychotic disorders (ATPD) was
introduced in ICD-10. Subsequent studies have called into question its validity and …

The tenth revision of the International Classification of Mental and Behavioural Disorders
(ICD-10) introduced the category F23 'Acute and transient psychotic disorders'(ATPD) to …