Narcissistic personality disorder (NPD) is a mental health condition. It requires diagnosis by a mental health professional, although this can be challenging because it manifests differently in women ...

Personality Disorders are long-standing patterns of thinking and behavior that lead to problems in interpersonal relationships and may cause impairment or distress in the person with the disorder. A ...

Where mood disorders can cause temporary or fluctuating changes in mood, personality disorders cause symptoms that remain consistent over time and across a range of situations. For example, bipolar ...

Cluster C personality disorders are a group of mental health conditions that cause intense fearfulness, insecurity, or perfectionism. The symptoms are long-term and impact many aspects of life.

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.

Written by Patricia Lockwood, Ph.D., and Ruth Pauli, Ph.D., with edits from Jo Cutler, Ph.D. Antisocial behaviours include rule-breaking or criminal behaviour, lying ...

Medically reviewed by Kathleen Daly, MD Key Takeaways People with OCPD have a strong need for orderliness and ...

Diagnosing personality disorders in children is controversial due to natural developmental shifts in mood and behavior. When maladaptive traits remain pervasive and persistent, however, a personality ...