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Personality disorders - an overview

Personality disorders cover a range of behaviours that do not fit into another diagnostic category, but where those affected nevertheless have difficulty in copiing with life.

 

What is a personality disorder?

 

'Personality Disorder' is a controversial diagnosis, covering a wide range of different attitudes and behaviours and affecting an estimated 10% of the general population.  The term is generally used to describe behaviours that do not fit into any other obvious diagnostic category, but where the person nevertheless has difficulty coping with life and where that behaviour persistently causes distress to themselves or others.  Common problems include having difficulty in sustaining relationships and interpreting social cues. At present there is no consensus as to its causes or treatment.

 

As the name implies a 'personality' disorder is about problems arising from a persons character. In effect who they are and how they behave are at odds with commonly held social and emotional expectations of what is regarded as 'normal'.   What is regarded as 'normal, of course varies from culture to culture and the diagnosis has to be made within the context of the rules, obligations and social expectations held within a particular community.   For example, behaviours valued in a battleground are not seen as appropriate during peace time.

 

There are various different types of personality disorders but all of them share the following features:

 

  • Most often the first signs of a personality disorder appear in late childhood or adolescence and continue during adulthood.  
  • Personality disorders in children or adolescence are sometimes described as conduct disorders.  However most conduct disorders in children do not necessarily lead to personality disorders in adults.
  • Someone with a personality disorder holds attitudes and behaves in ways that can cause considerable problems for themselves and others. For example the way they perceive the world; the way they think; the way they relate to other people; the way they do or don't get upset.
  • People diagnosed with personality disorder may be inflexible in that they may have a narrow range of attitudes, behaviours and coping mechanisms
  • These ways of behaving are long standing

 

Other key points:

 

  • Most people diagnosed with a personality disorder fit the criteria for at least two different types of personality disorder
  • Most people diagnosed with a personality disorder are not dangerous
  • Dangerousness is most often but not exclusively associated with anti-social or psychopathic disorder
  • People diagnosed as borderline or paranoid personality disorder may be at higher risk of self harm and/or suicide than other people
  • People with personality disorders have multiple needs and vulnerabilities

 

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Causes of personality disorders

 

To date there has been very little research into the causes of personality disorders.  It is generally assumed that there are a number of possible causes including problems in early childhood such as abuse, inadequate parenting, neglect and trauma.  Neurological and genetic factors such as brain damage or low levels of serotonin may also play a part.  

 

If you have a personality disorder you may also have other mental health problems, such as depression, anxiety, panic disorders, eating disorders, deliberate self-harm, substance misuse, and manic depression.   It is not known if the personality disorder causes these other problems or if they simply exist side by side and are unrelated.  

 

It can be very difficult to diagnose personality disorders because of other mental health problems, which often hide the personality disorder.  It is also possible to misdiagnose someone as having a personality disorder if they have a syndrome with similar symptoms e.g.  post-traumatic stress syndrome or Asperger's syndrome.

 

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Classification of personality disorders

 

Two different classification systems are used for personality disorders:

 

Diagnostic criteria: DSM classification system

Diagnostic criteria for personality disorder refer to behaviours or traits that are characteristic of the person's recent and long term functioning since early childhood.  Personality disorder describes a constellation of behaviours or traits that cause either significant impairment in social or occupational functioning or subjective distress.

 

Diagnostic criteria: ICD classification system

Diagnostic criteria include variety of conditions which indicate a person's characteristic and enduring patterns of inner experience (cognition and affect) and behaviour(s) that differ markedly from a culturally expected and accepted range.

 

Types of personality disorder

 

According to the DSM system, there are three main clusters of personality disorder.

 

Cluster A:

 

 Cluster B:

 

Cluster C:

 

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Treatments and self management strategies

 

At present very little is known about the long term benefits of different forms of treatments for personality disorders.  This is because very little research has been undertaken.  The research that has been undertaken to date suggests that most forms of personality disorder may be treatable or manageable, especially the more moderate forms, but no single treatment or management strategy will be effective in all cases.

 

Personality disorders may be difficult to treat because they involve lifelong, pervasive attitudes and behaviours and because people with personality disorders often have other mental health problems.  When a treatment is seen to fail  it is often the patient who is blamed for not fitting the programme rather than the service admitting that it has not met the individual's need.

 

In the UK treatment for personality disorders varies considerably, depending to a large extent on whether people are in a general NHS setting, an in-patient psychiatric unit, special hospital or in the prison system.  The availability of appropriate resources including qualified staff, therapeutic environments and management support for innovative treatments is also a major issue.

 

Medication (pharmacological treatments)

Short term treatments may include anxiolytic or neuroleptic drugs which are given for short periods or at times of severe stress.  Long term treatments may involve the use of neuroleptics which can be helpful in cases of paranoid and schizotypal personality disorders. However it is possible that the medication is being used to control risk and stress, rather than having any long term impact on the personality disorder itself.

 

Psychodynamic treatment

This treatment emphasises personality structure and development.  It aims to provide insight for people allowing them to understand their feelings and to find better coping mechanisms.  This approach has had limited success and is likely to be less successful for those with addiction and/or antisocial personality disorder.

 

Cognitive and behavioural therapy

Cognitive and behavioural therapies cover a wide range of treatments such as Cognitive Therapy, Dialectical Behaviour Therapy, Interpersonal Psychotherapy and Cognitive Analytic Therapy.  Most cognitive behavioural approaches address specific aspects of thoughts, feelings, behaviour or attitude, and do not claim to treat the entire personality disorder of the person.  Research suggests that there are some short term benefits to these approaches but more research is required into the long term benefits.

 

Therapeutic Communities

The Therapeutic Community (TC) approach involves living in a therapeutic community for several months.  Engagement in therapy is voluntary and responsibility for the day to day running of the TC is shared between patients and staff.  Members of the TC are encouraged to talk about their feelings, and particularly their feelings about each others' behaviour.  This encourages them to think about the affect of their own behaviour on other people. The results of TC are still under scrutiny.

 

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Written in 2003 

 

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