Borderline personality disorder (BPD) typically has an onset in adolescence. Nonsuicidal self-injury (NSSI) could be associated with its subsequent development. The aim of this study was to examine whether NSSI among adolescents in the community is associated with a risk for BPD in emerging adulthood. Sixty-nine adolescents (11-13 years old) with a history of NSSI and 61 matched controls were assessed for NSSI and then reassessed between ages 18 to 20 years. Findings showed that continuation of NSSI over time was associated with higher ratings of BPD symptomatology and greater impairment in psychosocial functioning. Both of these relations were mediated by deficits in emotion regulation. These results suggest that adolescents who engage in NSSI may need to be assessed for problems regulating emotions and to be provided with early interventions to help prevent continuation of NSSI.

中文翻译：

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青春期早期的非自杀性自我伤害是成年早期边缘性人格障碍的预测指标。

边缘型人格障碍 (BPD) 通常在青春期发病。非自杀性自伤 (NSSI) 可能与其随后的发展有关。本研究的目的是检查社区青少年的 NSSI 是否与成年后患 BPD 的风险有关。对 69 名有 NSSI 病史的青少年（11-13 岁）和 61 名匹配的对照组进行 NSSI 评估，然后在 18 至 20 岁之间重新评估。研究结果表明，随着时间的推移，NSSI 的持续性与 BPD 症状的更高评级和心理社会功能的更大损害有关。这两种关系都是由情绪调节缺陷介导的。