Comorbidity is when a person has more than one health condition at once. Researchers investigating the comorbidity of personality disorders have found people with certain disorders may have other ...

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.

Many of my clients seek therapy due to chronic relationship problems—whether it be with their parents, co-workers, family members, and/or partners. “They're driving me crazy!” “Is it them or me?" “Am ...

Personality refers to a relatively stable set of tendencies in behaviors, cognitions, and emotional patterns, which together constitute a person’s unique character. One person may, for instance, be ...

Cluster C personality disorders include conditions with anxious and fearful thoughts and behaviors. These are avoidant personality disorder (AVPD), dependent personality disorder (DPD), and ...

HAMBURG — What is “normal” and what isn’t? This question is constantly being renegotiated in psychology. And sometimes, the boundaries shift, as they are now. What is considered a personality disorder ...

Narcissistic personality disorder (NPD) is 1 of 10 clinically recognized personality disorders. Though NPD is only one official diagnosis, doctors further classify the condition into 2 types.

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 ...

Jocelyn Solis-Moreira is a New York-based science journalist whose work has appeared in Health, Live Science, and Discover Magazine, among other publications. She holds a master's degree in psychology ...