Symptoms:

People with BPD are often uncertain about their identity. As a result, their interests and values may change rapidly.

People with BPD also tend to see things in terms of extremes, such as either all good or all bad. Their views of other people may change quickly. A person who is looked up to one day may be looked down on the next day. These suddenly shifting feelings often lead to intense and unstable relationships.

Other symptoms of BPD include:

• Fear of being abandoned
• Feelings of emptiness and boredom
• Frequent displays of inappropriate anger
• Impulsiveness with money, substance abuse, sexual relationships, binge eating, or shoplifting
• Intolerance of being alone
• Repeated crises and acts of self-injury, such as wrist cutting or overdosing

Signs and tests:

Like other personality disorders, BPD is diagnosed based on a psychological evaluation and the history and severity of the symptoms.