[Transition from child and adolescent to adult mental health care].

Adolescents and young adults are at particularly at-risk population in mental health. For a large majority of patients suffering from chronic psychiatric condition, the age of onset of psychiatric symptoms is less than 24 years, while the coverage in psychiatric care is the lowest between 16 and 24. Presenting a psychiatric pathology during childhood and adolescence constitutes an independent risk factor for the occurrence of adverse life events in adulthood. Furthermore, that population is at the edge between child and adolescent mental health services (CAMHS) and adult mental health services (AMHS). Transition is the deliberate and planned movement from CAMHS to AMHS. CAMHS and AMHS struggle to achieve optimal transitions between them. Many barriers exist at the interface of the two types of structure and some young people who require continuous care during this period do not have access to it. There are also too few specific psychiatric services for the population of adolescents and young adults. Some recommendations emerge to intend to guide practices, but the literature lacks data to better define this population and build guidelines about the transition between CAMHS and AMHS and about specific services for adolescents and young adults in psychiatry.