The prodromal period leading to schizophrenia has been the focus of significant interest in recent years. This is due not only to the possibility of identification of preschizophrenic states but also to the potential for improving prognosis as a result of early intervention. There are many approaches to the identification of the schizophrenia prodrome. Interventions in the prodromal period have met with various degrees of success. In this article, the authors present an overview of the literature reflecting the development of the prodromal concept and its implications for early identification. They also discuss various interventions proposed for this period and some ethical considerations related to these interventions. Despite the growing body of knowledge in this field, there is a need for more research data to support the establishment of treatment guidelines. Future directions of research are also discussed.