Lifelong mental health service use among 15-22 years old offenders: a document-based, mixed-methods descriptive study.

Young offenders had symptoms from early ages, but during childhood and adolescence, involvement in mental health services appeared for most as relatively short, repetitive or lacking. To help children at risk of criminal development, a multiprofessional approach, an early evidence-based intervention for behavioural symptoms and screening for learning problems, traumatic experiences and substance use are necessary. Results can help identify children and adolescents with a risk of criminal development, to develop mental health services and to plan further research.