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 ...

Paranoid personality disorder can lead to unwarranted distrust, jealousy, and feelings of persecution by others. This may affect all types of relationships. Various strategies can help people cope.

Narcissistic personality disorder (NPD) is a Cluster B-Axis II personality disorder comprised of a pervasive pattern of grandiosity in fantasy or behavior, a constant need for admiration, and a lack ...