[Interventions in people at risk of developing first episode psychosis: a survey of current randomised controlled studies].

Early and valid detection of the psychosis risk syndrome, and indicated prevention aim at preventing, delaying or ameliorating frank psychosis, improving current symptoms as well as emerging psychosocial disability. In a systematic literature search we identified seven completed randomised controlled trials of interventions for individuals at high risk of developing first episode psychosis. These studies evaluated antipsychotics, neuroprotective agents, cognitive behavioural and integrated treatment approaches. All trials reported advantages for specific interventions as compared to the respective control conditions (although not significant in each of the studies), which proved to be significant in the first meta-analysis of the studies. However, the current results do not allow recommendations for any specific treatment. Therefore, interventions should be thoroughly reviewed based on their risk/benefit ratio. The level of individual clinical risk, assumed benefits and side effects of interventions are critical determinants for these considerations. Future research is needed with sufficiently powered, methodologically sound replication studies, which are designed to explore differential efficacy of the interventions. © Georg Thieme Verlag KG Stuttgart · New York.