Mental Health UK
Borderline Personality Disorder


This section has information on borderline personality disorder (BPD), including symptoms, causes and where to get further information and support. Borderline Personality Disorder is also called Emotionally Unstable Personality Disorder (EUPD). In this section, we call it BPD.

  • BPD means that you feel strong emotions that you struggle to cope with. You may feel upset or angry a lot of the time.

  • Around 1 in 100 people have BPD.

  • There are different reasons why people get BPD. A lot of people with BPD have had traumatic problems in their childhood.

  • If you have BPD, it is more likely that you will self-harm and have problems with relationships, alcohol or drugs. There is help available.

This section covers:

  1. What is borderline personality disorder (BPD)?

  2. What are the symptoms of BPD and how is it diagnosed?

  3. What are the different types of BPD?

  4. What causes BPD?

  5. Where can I get further information and support?

This information was written by Rethink Mental Illness, which has been awarded Information Standard accreditation for being trusted and relevant.