[Schizophrenia in children and adolescents: relevance and differentiation from adult schizophrenia].

Schizophrenia in childhood is rare (point prevalence <1/10,000 before the age of 12) and most often has insidious onset, severe clinical presentation and adverse course and outcome. The incidence of schizophrenia rises dramatically in adolescence, and its prevalence is estimated at 0.23% in the age between 13 and 18 years.