How common are personality disorders? An estimated 9 percent of the general population has one or more personality disorder; that number approaches one-third in outpatient psychiatric clinical ...

Common personality disorders: It is important to understand the symptoms of common personality disorders so that you know how to deal with their peculiar behaviours.

While medication is not the primary treatment for BPD, a therapist may prescribe antidepressants, mood stabilizers or ...

Two common personality tests often used to diagnose antisocial personality disorder include the Personality Assessment Inventory and the Minnesota Multiphasic Personality Inventory (MMPI).

Personality disorders fall into different “clusters” of disorders that share similar characteristics. Mental health professionals define schizoid and paranoid personality disorders as Cluster A.

Cluster A personality disorders are marked by unusual behavior that can lead to social problems. We'll go over the different disorders in this cluster as well as their common traits. You'll also ...

The cause of antisocial personality disorder is currently unknown. It may stem from genetics and environmental factors, such as traumatic life experiences.

Cluster A personality disorder is characterized by odd or eccentric behavior. Learn about the causes, symptoms, and treatment options for this condition today.

Navigating relationships with people who have personality disorders can be challenging and often leaves you second-guessing yourself. These interactions can be puzzling as they fluctuate between ...

Learn more about borderline personality disorder (BPD), including common signs and symptoms, causes and possible treatment options for those with the condition.