Personality disorders
Learn more about the diagnoses and treatments for personality disorders, such as borderline personality and narcissistic personality.
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Personality disorders: an overview
Personality disorder refers to a long-term pattern of thinking and behaviour that causes distress, making it difficult to function in everyday life. Read more for personality disorder symptoms and treatment.
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Histrionic personality disorder
People with histrionic personality disorder can seem highly dramatic and approval seeking, with a desire to be the centre of attention.
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Dissociative identity disorder
Dissociative identity disorder, previously known as multiple personality disorder, causes people to feel as though they have multiple distinct personalities.
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Avoidant personality disorder
People with avoidant personality disorder appear shy and timid. They avoid people and situations because they fear negative judgement by others.
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Antisocial personality disorder
People with antisocial personality disorder are sometimes called 'psychopaths'. They tend to disregard the law or other people's rights.
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Borderline personality disorder (BPD)
Borderline personality disorder (BPD) is a mental health disorder affecting people's thoughts and behaviours, making it difficult to cope with life. Find out more about BPD symptoms and diagnosis.
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Narcissistic personality disorder (NPD)
People with narcissistic personality disorder (NPD) may appear arrogant, with an inflated self-image and disregard for the feelings of others. Find out more about NPD causes and diagnosis.
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Dialectical behaviour therapy (DBT)
Dialectical behaviour therapy (DBT) is used to treat people with borderline personality disorder. It aims to change negative thought patterns and behaviours.
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Social behaviour disorders
Links to information about social behaviour disorders.
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