The finding that temperament may play a role in the etiology of personality disorders suggests that susceptibility to the development of a personality disorder may be inherited.
Personality disorders are a group of mental disorders in which patterns of thinking, functioning, and behavior are rigid and unhealthy. People with personality disorders have difficulty recognizing and relating to situations and people.
Research suggests that genetics, abuse, and other factors contribute to developing OCD, narcissism, and other personality disorders. In the past, some believed that people with personality disorders were lazy and evil. It can also appear (in childhood). The characteristics and symptoms vary greatly depending on the duration. Many resolve over time.
Extensive studies show that the most common personality disorder is obsessive-compulsive personality disorder. The second most common is Narcissistic Personality Disorder, followed by Borderline Personality Disorder.
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