Abstract
The Mental disorders in children and adolescents represent one of the largest unaddressed health burdens globally. Approximately half of all lifetime mental disorders begin before the age of eighteen (Solmi et al., 2022; Kessler et al., 2005), yet most affected young people never receive formal care, and the treatment gap is widest in low and middle income countries (Kieling et al., 2011; Patel et al., 2007). This paper reviews five interconnected domains of youth mental health: depression and anxiety, school based mental health systems, suicide prevention, digital mental health interventions, and the relationship between trauma exposure and resilience. Evidence was drawn from systematic reviews, meta analyses, randomised trials, and institutional reports published mainly from 2010 onward, and synthesised narratively. Three consistent findings emerge across domains. First, prevalence estimates for internalising symptoms rose measurably during and after the COVID-19 pandemic, particularly among adolescent girls (Racine et al., 2021). Second, effective interventions exist at every level of the care pyramid, but implementation fidelity, workforce capacity, and sustained funding determine outcomes more reliably than the choice between comparably evidenced intervention models (Durlak and DuPre, 2008; Werner-Seidler et al., 2021). Third, protective factors operating at family, school, and community level account for a substantial share of variance in outcomes following adversity (Masten, 2014; Ungar, 2011), which shifts the policy question from deficit reduction alone toward the deliberate construction of protective environments. The paper concludes with implementation priorities for resource constrained settings, including task shifting to supervised non specialist providers (Singla et al., 2017; van Ginneken et al., 2021), integration of mental health into existing school health platforms (Fazel et al., 2014), means restriction and responsible media reporting as population level suicide prevention measures (Gunnell et al., 2017; Niederkrotenthaler et al., 2020), and cautious, evidence anchored deployment of digital tools (Grist et al., 2019; Torous et al., 2018).