Reviewed September 6, 2026

Learn About Borderline Personality Disorder

BPD is a mental health condition involving persistent difficulties with emotions, relationships, self-image, and behavior. A diagnosis requires a structured assessment by a qualified mental health professional—not an online result.

Start with the question you have

SIGNS AND ASSESSMENT

What patterns are associated with BPD?

Read a plain-language overview and learn what a professional assessment considers.

TREATMENT

What treatments are used?

Understand psychotherapy, medication limits, care planning, and questions to ask a provider.

RECOVERY

What can recovery involve?

Explore realistic goals, setbacks, support, and ways to track progress without invented stories.

What BPD can affect

The pattern and intensity differ between people and can change over time. Areas that may be affected include:

• regulating intense or rapidly changing emotions
• maintaining a stable sense of self
• navigating closeness, conflict, or fear of abandonment
• managing impulsive actions during distress
• coping with emptiness, anger, dissociation, self-harm, or suicidal thoughts

These experiences can overlap with trauma, mood, anxiety, substance-use, neurodevelopmental, and other conditions. Context matters.

What professional help adds

A clinician can explore how long patterns have lasted, how they affect daily life, other possible explanations, current safety, strengths, and support needs. Treatment is usually planned collaboratively.

Psychotherapy is the primary treatment described by NIMH. NICE advises comprehensive assessment, an agreed care plan, and a crisis plan when appropriate.

Find support resources Use the reflection checklist

Primary sources used

Content is editorially summarized for education and is not a substitute for the source or professional advice.

Need immediate help?

If you may act on thoughts of harming yourself or someone else, contact local emergency services now. In the U.S. or Canada, call or text 988. Elsewhere, use our region-aware crisis directory.

Open crisis resources