Psychotic disorders and psychotic experiences are common in the general population (McGorry et al., 1995). Psychotic disorders have a significant impact on individual’s personal life but also on the society. In the last decades, interest in the prevention of mental disorders has increased through the characterization, the prognostic evaluation, and the establishment of preventive interventions in individuals at risk of developing psychotic disorders (Fusar-Poli et al., 2020b). In these individuals, a prodromal period may present, during which they are found to be at high risk of developing psychotic disorders. Several descriptions of this prodromal period according to their characteristics and the features found have been piloted. While in some patients the risk of developing non-affective psychotic disorders as schizophrenia prevails, in others, the features they present put them at high risk of developing affective psychotic disorders such as bipolar disorder..
