"Personality Disorder Not Otherwise Specified" (PD-NOS) is a diagnostic category used in the past to describe individuals who exhibited traits of a personality disorder but didn't fit neatly into any specific personality disorder category. However, it's worth noting that the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), the standard classification system for mental disorders, no longer includes PD-NOS as a separate diagnosis.
Instead, the DSM-5 introduced a new approach to diagnosing personality disorders called the "Personality Disorder Trait Specified" (PD-TS) model or Alternative Model for Personality Disorders. According to this model, personality disorders are assessed on a continuum of specific maladaptive personality traits, rather than fitting into rigid categories. This approach allows for a more nuanced and individualized understanding of personality difficulties.
The diagnosis of Borderline Personality Disorder (BPD) is one of the specific personality disorders outlined in the DSM-5. If your therapist mentioned borderline during your sessions, it's possible that they are using the PD-TS model to describe your symptoms and focusing on specific traits that align with BPD. It's also possible that your therapist is taking a cautious approach before providing a formal diagnosis or is still gathering information to make a more accurate assessment.
It's essential to have open communication with your therapist about your diagnosis and treatment plan. If you're confused about your diagnosis or want more clarity, consider discussing your concerns with your therapist during your therapy sessions. They should be able to explain the diagnosis and how it relates to your experiences, as well as answer any questions you may have.
Remember that receiving a diagnosis is just the first step in understanding and addressing your challenges. The goal of therapy is to provide support, develop coping strategies, and help you improve your well-being and quality of life. If you feel uncertain or need further clarification about your diagnosis or treatment, don't hesitate to talk openly with your therapist. They are there to assist you in your journey towards healing and growth.