There are many similarities between psychopathological manifestations of adolescence and mechanisms at stake during the radicalisation process. As a consequence, and despite the rarity of psychotic disorders, mental health professionals have a role to play in the treatment and understanding of radical engagement among European youth. Studies with empirical data are limited, and more research should be promoted (in particular in females and in non-Muslim communities) to better understand the phenomenon and to propose recommendations for prevention and treatment.

A new model of radicalization has appeared in Western countries since the 2010s. However, few empirical data are available to interpret the profiles of European young people who have embraced radical Islamism. Mixing qualitative/quantitative approaches, the present study is the first to explore their motives for radicalization, as well as how characteristics at baseline predicted their status at follow-up (FU). In 2014-2015, 150 individuals (mean age: 19.82 years; 101 (67.3%) females; 100 (67%) Muslim converts) were followed-up prospectively by the Centre de Prévention contre les Dérives Sectaires liées à l'Islam (CPDSI) until September 2016. Using a multiple correspondence analysis, we found that eight motivational dimensions (interest in violence; feelings of depression, responsibility, uncertainty or loneliness; experience of abuse; issues with sexuality; and poor insight) combining in eight statistical factors drove individuals towards radicalization. At FU, 95(63%) were no longer radicalized, 21(14%) were disengaged, 19(13%) were still radicalized, and 15(10%) had reached the Islamic State. Univariate and multivariate analyses found some protective factors defining individuals with developmental vulnerabilities that can be encountered in many psychopathologies. In addition, multivariate models showed that worse status at FU was predicted by being married, having married parents, having attempted to radicalize other relatives, and having a close friend or relative imprisoned before radicalization. We conclude that multidimensional efforts to de-radicalize young people are efficient, although a worse prognosis is associated with neighborhood/proximal phenomena. Prevention should target these local/proximal contexts to further prevent radicalization.

Introduction: Radicalization is a major issue in Western societies. Supposedly, there is no predefined pathway leading to radicalization. However, youth appears to be at risk for radicalization. The aim of this study was to compare the social and psychological profiles of radicalized minors and radicalized adults. Methods: This cross-sectional study is based on the first large prospective sample of young French individuals (N = 150) who aimed to join the Islamic State (IS) between 2014 and 2016. This sample included 70 adolescents (mean age 15.82 years old, SD 1.14) and 80 young adults (mean age 23.32 years, SD 4.99). We compared the two groups on their sociodemographic and psychological characteristics. Results: Radicalized minors and radicalized adults have different profiles and follow different paths in the radicalization process. Among the group of minors, there are significantly more female subjects (81.4% versus 55.0%, adj. p = 0.007) and more self-harm history before radicalization (44.3% versus 16.2%, p <0.001). In addition, there are significantly less attempts to radicalize the entourage (24.3% versus 50.0%, adj. p = 0.007), and a tendency to show less cases of radicalization among the entourage (32.9% versus 52.5%, adj. p = 0.075) and less radicalization through physical encounter (45.7% versus 65%, adj. p = 0.082). Discussion: Overall, radicalized minors appear to be more psychologically vulnerable individuals than radicalized adults. These differences highlight the importance of tailored interventions in order to prevent radicalization among vulnerable adolescents.

In this paper, we report for the first time the activities of the C'JAAD, the pioneer unit in France for early detection and treatment of young adults with early psychosis. These observations indicate that such early intervention centre is a feasible and sustainable extension of traditional care for people with mental disorders in this country and offers promising perspective for the development of further centres.

To understand whether changes exist in the types of youths mental health problems addressed in emergency in a context of increasing demand, we conducted a retrospective chart review in an emergency care outpatient unit. Data from children and adolescents admitted at four different time periods (years 1981, 1992, 2002, and 2017) were compared to determine trends in terms of patients' characteristics, nature of the mental health problems and final care decisions. Between 1981 and 2017 there was a 3.85 times increase in the annual number of patients presenting to the emergency consultations. The proportion of youths being referred for anxiety or depressive symptoms sharply increased over time, while no differences were found for the proportion of aggressive behaviors and suicidal attempts. Anxiety disorders became the most frequent discharge psychiatric disorder in youths admitted in the emergency unit, rising from 5% in 1981 to 34% in 2017. Significant changes were also observed in the source of referral to the emergency unit; in particular emergency consultations in 2017 were about twice as likely as in 1981 to be requested directly by the family. This data suggested that the increased use of emergency services observed over the last decades is associated with significant changes in the patient and his/her family's demands about mental health difficulties. Such findings are worth considering for mental health interventions that aim to address the emergency overcrowding issue.

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Autoimmune encephalitis (AIE) is a rare, severe, and rapidly progressive encephalopathy, and its diagnosis is challenging, especially in adolescent populations when the presentation is mainly psychiatric. Currently, cerebral 18-fluorodeoxyglucose positron emission tomography (18F-FDG-PET) imaging is not included in the diagnosis algorithm. We describe a 16-year-old patient with probable seronegative encephalitis with catatonia for which several cerebral PET scans were relevant and helpful for diagnosis, treatment decision making, and follow-up monitoring. The patient recovered after 2 years of treatment with etiologic treatment of AIE and treatment of catatonia. This case suggests a more systematic assessment of the clinical relevance of 18F-FDG-PET imaging in probable seronegative AIE.