Petulant borderline personality disorder (BPD) is a potential subtype of BPD. It involves mood changes and irritability. There is debate over subtypes of BPD. Petulant BPD is one of the four subtypes ...

Medically reviewed by Elle Markman, PsyD, MPH Key Takeaways BPD affects mood, relationships, and how people see ...

Relationships can sometimes feel like an emotional rollercoaster, particularly when one person's perception of the other shifts dramatically from admiration to disdain. This pattern, known as ...