Medically reviewed by Kira Graves, PhD Key Takeaways People with schizoid personality disorder often show little emotion and ...

Paranoid personality disorder involves a persistent suspicion and mistrust of other people. This can lead to difficulties with functioning socially and in relationships. Treatment for paranoid ...

Schizotypal personality disorder is a cluster A personality disorder that involves various symptoms. These symptoms include difficulty in relationships, atypical thinking and behavior, and a distorted ...

In addition to often being referred to by the same acronym (BPD), bipolar disorder and borderline personality disorder share other superficial similarities that make it easy to confuse the two.

Is it possible to spot personality dysfunction from someone's everyday word use? My colleagues and I have conducted research that suggests you can, and often sooner than you might expect. Subscribe to ...

Psychopaths might account for only about 1% of the general population, but they account for a disproportionate share of violent crime.

One of the unfortunate things about the current state of personality disorder diagnosis is that there are too many different competing systems. Each system is more or less internally consistent, but ...

There is substantial evidence supporting the effectiveness of longer-term treatments for individuals with personality disorder, and particularly borderline personality disorder.1 Yet, there is a ...