What is the definition or description of: personality disorder?

Personality Disorder: According to the dsm IV tr, a personality disorder is: an enduring pattern of inner experience and behavior that deviates markedly from the expectations of the individual's culture, is pervasive and inflexible, has an onset in adolescence or early adulthood, is stable over time, and leads to distress or impairment.

Personality DO: Enduring behaviors or traits associated with significant distress or disability & deviating from social expectations & norms.