The DSM defines Narcissistic Personality Disorder using nine specific criteria. This video walks through each one alongside Donald Trump's own public statements and documented behavior.

*(CNN) — Nick Cannon has spoken out about his recent diagnosis of narcissistic personality disorder, saying “I need help.” The “Masked Singer” host revealed in a podcast earlier this month that he had ...

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 ...

Dimensional models of personality disorders are increasingly popular, but do they obscure real clinical syndromes?

Sarah Schuster has a journalism degree from Syracuse University. She spent seven years helping people tell their mental health stories at The Mighty, and is currently pursing a master's in social work ...

Mental health disorders come in many forms and affect thoughts, emotions and behaviors in complex ways. Conditions like anxiety, depression and bipolar disorder are among the most frequently diagnosed ...

Symptoms of ASPD can start in childhood and may include manipulative and reckless behaviors. ASPD often co-occurs with other mental health conditions, which makes it harder to treat. Up to 31% of ...