Borderline personality disorder (BPD) is a mental disorder with a high burden on patients, family members, and health-care systems. The condition was previously regarded as untreatable, but progress in understanding and management has resulted in earlier diagnosis and better treatment outcomes. A coherent syndrome of BPD typically onsets during adolescence (after age 12 years). BPD is often preceded by or co-develops with symptoms of internalising disorders (depression and anxiety), externalising disorders (conduct problems, hyperactivity, and substance use), or both. BPD is associated with various poor outcomes, including low occupational and educational attainment, lack of long-term relationships, increased partner conflict, sexual risk-taking, low levels of social support, low life satisfaction, and increased service use. Psychotherapy is the main treatment for BPD; drug treatment is only indicated for comorbid conditions that require medication, or during a crisis if psychosocial interventions are insufficient. Awareness of BPD by non-specialists, as well as specialists, is key to appropriate early intervention.

边缘型人格障碍 (BPD) 是一种对患者、家庭成员和医疗保健系统造成沉重负担的精神障碍。这种情况以前被认为是无法治愈的，但在理解和管理方面的进步导致更早的诊断和更好的治疗结果。BPD 的连贯综合征通常在青春期（12 岁以后）发病。BPD 通常先于或共同发展为内化障碍（抑郁和焦虑）、外化障碍（行为问题、多动症和物质使用），或两者兼有。BPD 与各种不良结果有关，包括职业和教育程度低、缺乏长期关系、伴侣冲突增加、性冒险、社会支持水平低、生活满意度低和服务使用增加。心理治疗是 BPD 的主要治疗方法；药物治疗仅适用于需要药物治疗的合并症，或在社会心理干预不足的危机期间。非专家和专家对 BPD 的认识是适当早期干预的关键。