A personality disorder is a term used to describe long-term problems that affect how a person:

  • Thinks
  • Feels
  • Behaves
  • Gets along with others

These problems can make daily life hard for the person and sometimes for the people around them.

Not everyone who attends SUN groups has a personality disorder

However, everyone who comes to the service is dealing with long-term difficulties like the ones described below.

How it might feel

People using our service often:

  • Know they are having difficulties
  • May feel stuck or worried that nothing can help
  • May have asked for help before but not found it useful

Common difficulties

Not everyone experiences the same problems, but people may struggle with some of the following:

Feelings and emotions

  • Strong feelings that are hard to manage
  • Quick changes in mood
  • Feeling anxious or low (depressed)

Coping with stress

  • Finding it hard to deal with everyday pressures
  • Feeling overwhelmed or unable to cope

Behaviour

  • Trying to cope in harmful ways, such as:
    • Hurting themselves
    • Using alcohol or drugs
    • Losing control of their temper

Relationships

  • Finding it hard to get along with others
  • Feeling anxious around people
  • Acting distant or keeping people at a distance
  • Having intense or unstable relationships

Impact on daily life

These difficulties can make it hard to:

  • Keep a job
  • Maintain a home or tenancy
  • Build and keep relationships

Why it is called a “personality” disorder

When these patterns have been there for a long time, they can become part of how a person:

  • Thinks
  • Feels
  • Acts

These are sometimes called personality traits.

If these traits cause serious problems in someone’s life, they may be described as a personality disorder.

Page last reviewed: 8 May, 2026