Personality disorders are a class of mental disorders characterized by long-term, severe, and persistent patterns of thought and behavior. Defining and categorizing personality disorders is difficult. Their origin may be genetic or environmental, or both.

The cultural and social context in which a person lives is very important in the definition of personality disorders. For a condition to be diagnosed as a personality disorder, there must be a pattern of behavior that causes significant distress and impairment in personal and/or social life.

Personality disorders are very diverse. However, they all share a common characteristic: a lack of ability to accept the demands and limitations of the outside world. These disorders affect a person's behavior, daily life, and relationships with people they know at home, work, and in their social life.

 

Before a person is diagnosed with a personality disorder, doctors need to investigate and rule out personality disorder changes. Often, those with personality disorders have experienced emotional problems in childhood.

Only one-fifth of those with personality disorders seek psychiatric support and treatment. Many experience difficulties in marriage, maintaining a stable career, and sustaining long-term friendships.

People with personality disorders are often unaware of the cause of their problems. They blame others for their own behavior and thoughts. Treatment is usually through psychotherapy, but medication is sometimes used. The key to therapy is establishing a trusting relationship. Treatment can be long-term and challenging.