Narcissistic personality disorder and the DSM-V.

We address 3 issues relevant to narcissistic personality disorder (NPD) and the DSM-V. First, we argue that excluding NPD while retaining other traditional personality disorder constructs (e.g., avoidant) makes little sense given the research literature on NPD and trait narcissism and their association with clinically relevant consequences such as aggression, self-enhancement, distorted self-presentation, failed relationships, cognitive biases, and internalizing and externalizing dysregulation. Second, we argue that the DSM-V must include content (in diagnostic form or within a dimensional trait model) that allows for the assessment of both grandiose and vulnerable variants of narcissism. Finally, we suggest that any dimensional classification of personality disorder should recover all of the important component traits of narcissism and be provided with official recognition in the coding system.