Borderline Personality Disorder (BPD) is a condition characterized by difficulties regulating emotion. This means that people who experience BPD feel emotions intensely and for extended periods of time, and it is harder for them to return to a stable baseline after an emotionally triggering event.

This difficulty can lead to impulsivity, poor self-image, stormy relationships and intense emotional responses to stressors. Struggling with self-regulation can also result in dangerous behaviors such as self-harm (e.g. cutting).

It’s estimated that 1.6% of the adult U.S. population has BPD, but that number may be as high as 5.9%. Nearly 75% of people diagnosed with BPD are women. Recent research suggests that men may be equally affected by BPD but are commonly misdiagnosed with PTSD or depression.

Symptoms

People with BPD experience wide mood swings and can display a great sense of instability and insecurity. Per the Diagnostic and Statistical Manual diagnostic framework, some key signs and symptoms may include:

• Frantic efforts to avoid real or imagined abandonment by friends and family.
• Unstable personal relationships that alternate between idealization (“I’m so in love!”) and devaluation (“I hate her”). This is also sometimes known as "splitting."
• Distorted and unstable self-image, which affects moods, values, opinions, goals and relationships.
• Impulsive behaviors that can have dangerous outcomes, such as excessive spending, unsafe sex, substance abuse or reckless driving.
• Self-harming behavior including suicidal threats or attempts.
• Periods of intense depressed mood, irritability or anxiety lasting a few hours to a few days.
• Chronic feelings of boredom or emptiness.
• Inappropriate, intense or uncontrollable anger—often followed by shame and guilt.
• Dissociative feelings—disconnecting from your thoughts or sense of identity or “out of body” type of feelings—and stress-related paranoid thoughts. Severe cases of stress can also lead to brief psychotic episodes.

Additional Information

NAMI is the reference for information on this page. For more information about Borderline Personality Disorder (BPD) visit the NAMI website at www.nami.org/Learn-More/Mental-Health-Conditions/Borderline-Personality-Disorder.

If you or a family member is experiencing a mental health or an alcohol or other drug-related emergency, seek immediate assistance by calling the 24-hour Suicide Prevention, Mental Health/Addiction Crisis, Information and Referral Hotline: (216) 623-6888 or United Way 2-1-1. You can also text '4hope' to 741-741.