Personality disorders are a group of mental illnesses that include long-term patterns of thoughts and behaviors that are unhealthy and inflexible, and that differ significantly from what is expected. Personality disorders typically cause significant problems with relationships, social activities, work and school. There are ten types of personality disorder and the symptoms of each are different. They can mild or severe. People with personality disorders often don’t know they have a problem. To them, their thoughts are normal, and they often blame others for their problems. The cause of personality disorders is unknown but many experts believe that genes and childhood experiences may play a role. If you think you may be suffering from a personality disorder, reach out to one of TherapyDen’s experts today.