DSM-III Personality Disorders among Patients with Major Depression, Anxiety Disorders, and Mixed Conditions

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Abstract
Of 298 mainly nonpsychotic psychiatric outpatients between 19 and 59 years of age, a group of patients having either pure major depression, major depression in combination with anxiety disorders, or pure anxiety disorders was extracted. The anxiety disorders were further differentiated in panic and nonpanic anxiety disorders. The groups were compared as to differences in frequency of personality disorders assessed by means of the Structured Interview for DSM-III Personality Disorders. The mixed major depression/anxiety disorder group appeared to be the most deviant with more severe personality disorders such as paranoid and borderline in addition to avoidant and dependent personality disorder. The differentiation between panic and nonpanic anxiety showed that it was patients with nonpanic anxiety features in addition to major depression who had this higher frequency of personality disorders. These findings imply that it is important to distinguish between major depression cases with and without anxiety disorders both in forthcoming research and in clinical practice.