The symptoms of borderline personality disorder include: a recurring pattern of instability in relationships, efforts to avoid abandonment, identity disturbance, impulsivity, emotional instability, and chronic feelings of emptiness, among other symptoms.
The main feature of borderline personality disorder (BPD) is a significant pattern of instability in interpersonal relationships, self-image, and emotions. People with borderline personality disorder can be very impulsive and may demonstrate self-injurious behaviors (e.g., risky sexual behaviors, cutting, or suicide attempts).
Borderline personality disorder occurs in most people by early adulthood (early 20s). A person with this condition will have experienced an unstable pattern of interacting with others for years. This pattern of behavior is usually closely related to the person’s self-image and early social interactions with friends and family. The behavior pattern is present in a variety of settings (e.g., not just at work or home) and often is accompanied by a similar lability (fluctuating back and forth, sometimes in a quick manner) of a person’s emotions and feelings.