Outcome and epidemiological research on personality disorders: implications for classification.

The construct of personality disorder has an overall definition that describes chronicity. However, the findings of outcome research indicate that while many patients stop meeting criteria for specific categories of disorder over time, they often continue to suffer from dysfunctional traits. One can also interpret epidemiological findings on personality disorders as overestimating disorders due to a failure to distinguish them from traits.

Personality disorders over time: precursors, course and outcome.

Personality disorders cause dysfunction over the course of adult life. A chronic course of disorder tends to be associated with an early onset, and personality disorders are preceded by precursor symptoms in childhood. Long-term outcome varies by personality disorder category: antisocial and borderline personality tend to remit with age, an improvement that is not seen in other diagnoses.