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Can we detect psychotic-like experiences in the general population?
B Nelson1, P Fusar-Poli, A R Yung
1Orygen Youth Health Research Centre, Centre for Youth Mental Health, University of Melbourne, Australia. nelsonb@unimelb.edu.au
Current Pharmaceutical Design
|January 14, 2012
Summary
Psychotic experiences are common in the general population, far more than diagnosed disorders. Persistent experiences increase the risk of developing psychosis, offering insights into its causes.
Area of Science:
- Psychiatry
- Psychology
- Epidemiology
Background:
- The continuum model suggests psychosis exists on a spectrum within the general population.
- Clinical psychosis represents a small fraction of the broader psychosis phenotype.
Purpose of the Study:
- To review studies on psychotic experiences in the general population.
- To examine the prevalence, risk factors, and implications of these experiences.
Main Methods:
- Narrative review of existing literature.
- Analysis of studies focusing on general population samples.
Main Results:
- Psychotic experiences are prevalent in the general population, exceeding diagnosed disorder rates.
- Persistent psychotic experiences are linked to a higher risk of future psychosis onset.
- Shared risk factors between general population psychotic experiences and schizophrenia.
Conclusions:
- General population psychotic experiences are a valuable phenotype for studying psychosis etiology.
- Specific experiences (e.g., paranoia, bizarre thoughts) may confer higher risk.
- Further research is needed on risk factor interplay, high-risk experiences, and potential adaptive functions.
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