[Early signs of mental disorders in children aged 3-12 years].

: Neurodevelopmental disorders, affective/emotional disorders and exposure to adverse life circumstances are the main sources of psychological impairment in school age children. They should be distinguished from transient psychological symptoms occurring in normal development that do not significantly affect children's emotional and social functioning. An early recognition and assessment is the first step towards adequate treatment of conditions associated with psychological impairment. Any severe or persistant behavioral or emotional symptom occurring in children should be considered a possible early sign of a neurodevelopmental disorder warranting further investigation. Neurodevelopmental disorders are generally associated with delays early in development affecting several domains (language, social functioning, emotional and behavorial regulation) and are predominant in boys. These disorders are highly comorbid and require multidisciplinary assessments and treatment plans. Emotional and behavioral conditions arising from early deprivation or maltreatment also affect various developmental domains and may have lasting consequences. Finally, many of the disorders showing rising prevalences in adolescence or early adulthood also have some developmental precursors before puberty. Progress in identification, appropriate assessment and treatment of early manifesting symptoms and conditions interfering with adaptive functioning is a major mental health issue requiring multidisciplinary competencies.