RESUMO
Losing a loved one is among the most common and stressful traumatic events that a child or and adolescent can experience and can be associated with mental health and somatic disorders, as well as a range of life issues and potentially negative outcomes that may impact longitudinal development. Complicated grief, a disorder that has been studied primarily among adults, has received increasing recognition among children and adolescents in recent years. The demonstration of the distinctive character of grief reactions in relation to major depressive disorder and posttraumatic stress disorder has resulted in the inclusion of "persistent complex bereavement disorder" in an annex section of DSM-5 and of "prolonged grief disorder" in ICD-11. The grieving process in children and adolescents is not linear and is often characterised by periods of regression. Developmental phases should be taken into account to understand and clinically describe grief reactions occurring during childhood and adolescence. There are currently numerous interventions for bereaved children and adolescents, but little evidence to support them. More research focusing on the understanding of the underlying mechanisms and the risk factors for complicated grief among children and adolescents, as well as the implementation of evidence-based interventions, is definitely warranted.