Gentilly

This study relates to the organization of a collection of clinical, biological / genetic and radiological (MRI) data from people with a psychotic episode and from their families. These data will be analyzed to clarify whether there is a different response to antipsychotic treatment based on developmental and clinical expression.To answer the question asked in the research, it is planned to include people with at least one psychotic episode,The target population will be a prospective cohort of patients admitted to a hospital or psychiatric clinic for the treatment of psychotic symptoms.Comprehensive medical evaluation will be carried out according to the clinical features and medical history of each patient, to identify medical causes of psychosis. Comprehensive neuropsychological and speech / language evaluation will be completed. A child psychiatrist-diagnostician will complete the Lifetime Dimensions of Psychosis Scale - Child and Adolescent version at baseline. When the patient and parents agree, structural and functional MRI examinations will also be completed, and blood will be drawn for DNA extraction and analysis. Selected assessments (including evaluation of treatment response to specific antipsychotic drugs) will be performed at follow-up visits after 1, 3 and 5 years.