Identity diffusion is one of the defining characteristics of borderline personality disorder (BPD). Given its central importance in the formal diagnostic criteria for personality disorders, identity diffusion is remarkably under-researched. In particular, our knowledge of the phenomenology of identity diffusion needs to be improved. This study is based on semistructured interviews with 16 younger women SCID-5-diagnosed with BPD. All interviews were analyzed using the interpretative phenomenological analysis approach. On the basis of this analysis, the patients' descriptions of how identity diffusion manifests itself in their subjective experience are classified into nine categories: disintegrated self-image; using various façades to stabilize the self; painful feelings of the self as broken; feeling that the self does not fit in; inner emptiness; "I don't know what I want"; great need for attention from others to stabilize identity; feeling unable to handle interpersonal relationships; and using sex to distract the self and regulate painful self-states.

中文翻译：

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有一个不安的身份是什么感觉？边缘型人格障碍患者身份扩散的现象学：一项定性研究。

身份扩散是边缘型人格障碍（BPD）的定义特征之一。鉴于其在人格障碍的正式诊断标准中的核心重要性，身份扩散的研究明显不足。特别是，我们对身份扩散现象学的认识需要提高。本研究基于对 16 名被诊断为 BPD 的年轻女性 SCID-5 的半结构化访谈。所有访谈均使用解释性现象学分析方法进行分析。在此分析的基础上，患者对身份扩散如何在其主观体验中表现出来的描述分为九类：瓦解的自我形象；使用各种立面来稳定自我；自我破碎的痛苦感觉；感觉自己不适应；内心空虚；“我不知道我想要什么”；非常需要他人的关注来稳定身份；感觉无法处理人际关系；并利用性来分散自我并调节痛苦的自我状态。