Personality disorders affect an estimated 9% of Americans. Only a mental-health professional can diagnose a personality disorder, typically in adulthood. Insider compared the behaviors, traits, and ...

The Diagnostic and Statistical Manual of Mental Disorders, DSM-5, identifies 10 unique personality disorders, each belonging to one of three groups known as "clusters." Cluster A contains paranoid, ...

The exact cause of personality disorders is unclear. However, genetics, neurological differences, and environmental factors may contribute to the development of these complex mental health conditions.

Genetics is just one of several factors thought to influence personality disorder development. Life experiences, family dynamics, coping mechanisms, and social learning may all be contributing factors ...

Lindsay Curtis is a health & medical writer in South Florida. She worked as a communications professional for health nonprofits and the University of Toronto’s Faculty of Medicine and Faculty of ...

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A personality disorder is a mental disorder that’s caused by an unhealthy pattern of thought and behavior. People with personality disorders often struggle to interact with the world. Their disorder ...