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September 14, 2025 63 mins

In this episode, we dive into the often-misunderstood world of personality disorders with a focus on borderline and narcissistic presentations. Rather than simply listing symptoms, our conversation explores what it means to view these disorders dimensionally, how traits show up in real life, blur at the edges, and influence identity, relationships, and emotional regulation. We also examine mentalization, the ability to understand our own and others’ inner worlds, and why it is such a powerful tool in therapy. From rethinking the DSM’s categories to unpacking the role of empathy and vulnerability, this discussion offers a fresh perspective on conditions that are too often oversimplified and stigmatized.

TUMAT Takeaways:

  • Personality disorders involve instability in emotional regulation, self-identity, and interpersonal relationships.
  • Borderline Personality Disorder (BPD) is characterized by emotional dysregulation and interpersonal hypersensitivity.
  • Narcissistic Personality Disorder (NPD) can be divided into grandiose and vulnerable subtypes, each with distinct characteristics.
  • Mentalization is the ability to understand one's own and others' mental states, crucial for effective therapy.
  • Empathy is a component of mentalizing, involving both cognitive and emotional aspects.
  • The DSM's categorical approach to personality disorders may not fully capture the complexity of these conditions.
  • Therapists must adopt a 'not knowing' stance to encourage patient reflection and insight.
  • Mentalization-based treatment (MBT) has shown effectiveness in treating personality disorders.
  • Understanding the patient's perspective is key to effective treatment.
  • Research supports the idea that mentalizing deficits are common in personality disorders.


To learn more about Mentalization-Based Treatment, check out MBT Boston, here.

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