There are 10 types of personality disorders. These disorders are further divided into 3 groups/clusters according to their overall similarities in characteristics. The name of the three clusters are as follows:

  • Cluster A: Odd and eccentric (Paranoid, Schizoid, Schizotypal)
  • Cluster B: Dramatic and emotional (Antisocial, Borderline, Histrionic, Narcissistic)
  • Cluster C: Anxious and fearful (Avoidant, Dependant, Obsessive-compulsive personality disorder)

Neural Basis Of Personality:

In one line:

Interaction of genes and environment of a person hence shaping his/her Personality.

There is a role of physical and emotional trauma in producing Personality disorders in vulnerable individuals during their growing age. Brain imaging shows that there is altered brain structure and function in some Personality disorders.

Favourable Traits:

According to Oxford Shorter Textbook of Psychiatry:

It is important to recognise that people with abnormal personalities generally also have favourable traits which the clinicians should always assess.

The following favourable traits can be found in various personality disorders:

  • Those with obsessional traits are often dependable and trustworthy.
  • Those suffering from borderline personality disorders are quite passionate, exciting and creative.
  • Those suffering from Histrionic personality disorder are very social.

Personality Change Due To Organic Disease Of Brain:

Brain health plays a key role in organic disorders

Causes(According to OSTP):

  • Injury or organic disease of the brain
  • Severe mental disorder especially schizophrenia
  • Exceptionally severe stressful experiences(e.g those experienced by histage or by prisoners undergoing torture)
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