Early intervention may postpone or even prevent the onset of psychosis and relieve symptom-related anxiety. Support and follow-up observation requires up-to-date knowledge of the nature of the risk symptoms of psychosis and of the therapy of the person having symptoms within the healthcare system. Healthcare professionals should be aware of the limitations of present research information in order to assess the correct magnitude of the risk of psychosis. Although a person assigned by current methods to the risk group presents a higher than tenfold risk compared with the rest of the population, improvement of prognostic accuracy remains as the central research issue.
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