Diagnostic stability in adolescents transiting to adult services: exploring the patterns of diagnostic adjustments

Introduction Most mental illness of adult life begin in late adolescence, affecting young people when they require transition to services. In <18 years old patients is more difficult establish a definitive diagnosis, so diagnoses are often unstable and temporary. patients, understanding diagnostic stability may help clarifying the course, developmental changes, long-term prognoses psychiatric disorders. Little research has explored adjustments that occur child adolescent health services, however previous studies reported moods disorders schizophrenia showed than other diagnoses. Understanding trajectories necessary improve psychopathology, order acquire discrete entities, clinical judgements, regarding risk prognosis. Objectives as evidence from childhood (child services) adulthood (adult limited, aim this study describe features services compare main diagnosis these made both Methods all individuals, between 18 25 old, admitted our outpatient clinic specialized prevention, treatment adolescents (ASST Grande Ospedale Metropolitano Niguarda, Milan), referred service 2021 2022. Clinical Diagnosis were using ICD-10 criteria. Results 301 new outpatients service: 171 130 2022 (until October). The mean age was 21,08. 30.2% come (29,2% 31,5% 2022). were: first reaction severe stress adjustment (F43), second specific personality (F60) thirst eating (F50). (F60), anxiety (F41). 56,1% have same 43.9% different diagnosis. There not differences sex (60,5% female 39,5% male). Patients youngers (19,68 vs 21,69), statistically significant. Conclusions Further required understand trajectories, especially longitudinal minors during period find patterns adjustments. Disclosure Interest None Declared