青少年和年轻人的非自杀性自我伤害：专家综述

Abstract Non-suicidal self-injury (NSSI) is highly prevalent among community and clinical adolescent populations and is associated with substantial psychiatric comorbidity, psychosocial impairment, and elevated suicide risk. This review synthesizes key findings on the development and maintenance of adolescent NSSI and discusses the clinical implications of this transdiagnostic behavioural phenomenon. It examines the prevalence and developmental course of NSSI, environmental and biological risk factors, proximal mechanisms, its conceptualization as an independent diagnosis versus a transdiagnos