Borderline personality disorder (BPD) is a mental health condition that affects a person's mood, behavior, and self-image. There are several synonyms used to refer to BPD, including emotionally unstable personality disorder (EUPD), borderliner personality organization (BPO), and borderline type of neurosis. While these terms may differ slightly in their wording, they all describe the same condition and are used interchangeably in mental health discourse. Individuals with BPD may experience intense emotional fluctuations, difficulty regulating their emotions, impulsivity, fear of abandonment, and unhealthy patterns in their relationships. Treatment for BPD often involves therapy and sometimes medication to help individuals manage their symptoms and improve their quality of life.