Borderline personality disorder (BPD) is a complex and often misunderstood mental health condition that affects an estimated 1.6% of adults in the United States. People with BPD experience intense and unstable emotions, often leading to impulsive behavior, relationship problems, and difficulty regulating their thoughts and behaviors. Symptoms of Borderline Personality Disorder The symptoms of BPD can vary widely from person to person, but generally include: Intense and unstable emotions: People with BPD often experience intense and rapidly shifting emotions, such as anger, sadness, anxiety, and shame. These emotions may be triggered by minor events, and can be difficult to control or manage. Impulsive behavior: People with BPD may engage in impulsive or reckless behavior, such as substance abuse, binge eating, or reckless driving. They may also engage in self-harm, such as cutting or burning themselves, in an attempt to manage their emotions. Unstable relatio...