Borderline personality disorder (BPD) is marked by unstable moods, behaviors, and relationships. Learn about borderline personality symptoms, causes, and treatments.

Learn about the history of the word "borderline" in borderline personality disorder, why this term is misleading, and what this means for your health.

Whether or not borderline personality disorder can be diagnosed in teenagers is highly controversial. Read about symptoms, diagnosis, and treatment.

Narcissistic personality disorder is a psychiatric condition marked by extreme egotistical behavior. It can co-occur with borderline personality disorder.

Anger is a key feature of borderline personality disorder. Also known as borderline rage, learn its symptoms and causes, plus treatment options for anger in BPD.

Antisocial personality disorder (ASPD) and borderline personality disorder (BPD) have some overlapping features but have many differences. Here's how they differ.

Quiet borderline personality disorder doesn't fit the typical BPD criteria and often goes misdiagnosed. Learn more about the symptoms, traits, causes, and treatments.

Borderline personality disorder can adversely affect college performance, but students can take steps to increase their odds of success.

Borderline personality disorder includes intense emotions that can trigger harmful behaviors. Try healthy coping skills to replace negativity.

Many people with borderline personality experience symptoms related to the process and content of their thinking, including paranoid ideation.