Borderline Personality Disorder (BPD) is a psychiatric health condition marked by unstable interpersonal relationships, an intense fear of abandonment, challenges in regulating emotions, persistent feelings of emptiness, chronic dysphoria or depression, impulsiveness, and a propensity for risky behaviors. Temporary features of BPD can include paranoid thoughts and dissociative episodes. Additionally, many individuals with BPD engage in recurrent self-harming or suicidal actions. BPD and Bipolar Disorder (BD) exhibit overlapping characteristics such as impulsivity and emotional instability, sparking debates on whether they are distinct disorders sharing similar features, part of a spectrum, or separate conditions that increase the risk for one another. This overlap in symptoms often complicates the differentiation between BPD and BD, sometimes leading to dual diagnoses when only one disorder is present. The mood swings and emotional variability in BPD can be mistaken for the mood changes seen in BD, and BPD-related behavioral issues can be misconstrued as BD symptoms. The co-occurrence of BPD and BD is linked to significant psychosocial impairment. Research by Frias and colleagues found that individuals with BD who also have BPD tend to experience the onset of mood symptoms earlier than those with only BD. These individuals also show higher levels of hostility, substance abuse, and suicide.