Narcissistic Personality Disorder and the Structure of Common Mental Disorders.
Narcissistic personality disorder (NPD) shows high rates of comorbidity with mood, anxiety, substance use, and other personality disorders. Previous bivariate comorbidity investigations have left NPD multivariate comorbidity patterns poorly understood. Structural psychopathology research suggests that two transdiagnostic factors, internalizing (with distress and fear subfactors) and externalizing, account for comorbidity among common mental disorders. NPD has rarely been evaluated within this framework, with studies producing equivocal results. We investigated how NPD related to other mental disorders in the internalizing-externalizing model using diagnoses from a nationally representative sample (N = 34,653). NPD was best conceptualized as a distress disorder. NPD variance accounted for by transdiagnostic factors was modest, suggesting its variance is largely unique in the context of other common mental disorders. Results clarify NPD multivariate comorbidity, suggest avenues for classification and clinical endeavors, and highlight the need to understand vulnerable and grandiose narcissism subtypes' comorbidity patterns and structural relations.
Stony Brook University, Stony Brook, New York.
Nicholas R
NR
Eaton
Stony Brook University, Stony Brook, New York.
Craig
C
Rodriguez-Seijas
University of Minnesota, Minneapolis.
Robert F
RF
Krueger
University of Georgia, Athens.
W Keith
WK
Campbell
National Institute on Alcohol Abuse and Alcoholism, Bethesda, Maryland.
Bridget F
BF
Grant
Columbia University and the New York State Psychiatric Institute, New York, New York.
Deborah S
DS
Hasin
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015897:Comorbidity; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis*; D008875:Middle Aged; D010554:Personality Disorders / Q000175:diagnosis*; D055815:Young Adult