# #cluster-b-personality > 4 public memos tagged #cluster-b-personality on MythOS. ## Links - [Tag Page](https://mythos.one/tag/cluster-b-personality) - [MCP Server](https://mythos.one/api/mcp) ## Memos - [Borderline Personality Disorder (BPD)](https://mythos.one/me/brianswichkow/01c68b): Borderline Personality Disorder (BPD) is classified in the DSM-5 as a personality disorder marked by pervasive instability in interpersonal relationships, self-image, and affect, alongside marked... - [Narcissistic Personality Disorder (NPD)](https://mythos.one/me/brianswichkow/16118a): Narcissistic Personality Disorder (NPD) is defined as a mental health condition involving patterns of grandiosity, a constant need for admiration, and significant deficits in empathy. Individuals... - [Histrionic Personality Disorder (HPD)](https://mythos.one/me/brianswichkow/7121c2): Histrionic Personality Disorder (HPD) is defined by excessive emotionality, attention-seeking behavior, and a pervasive need for approval. Individuals with HPD are often perceived as dramatic,... - [Antisocial Personality Disorder (ASPD)](https://mythos.one/me/brianswichkow/7dcab1): Antisocial Personality Disorder (ASPD) is marked by a pervasive disregard for the rights of others, chronic violation of social norms, impulsivity, and a lack of remorse. Individuals with ASPD may...