No cluster D of personality disorders is currently featured in the Diagnostic and Statistical Manual of Mental Disorders, 5th edition, text revision (DSM-5-TR). Only clusters A, B, and C are ...

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.

Lindsay Modglin is a nurse and professional writer who regularly writes about complex medical topics, as well as travel and the great outdoors. She holds a professional certificate in scientific ...

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 ...

Personality disorders involve long term, problematic behaviors that typically are first exhibited during adolescence and cause marked distress and impairment. The very definition of personality ...

Schizoid and paranoid personality disorders have key differences. Paranoid personality disorder (PPD) leads people to think that others are trying to harm them, while schizoid personality disorder ...

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 ...

Signs You May Have, Antisocial Personality Disorder. Lifehacker reports that people who have a hard time connecting with others or carrying on conversations may have antisocial personality disorder.