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This article promotes the enhancement of the alcohol and psychiatric comorbidity typology by including the full range of Axis II personality disorders in addition to Axis I disorders. Data from the Vietnam Experience Study (Centers for Disease Control, 1988), which included psychological assessment of 4,462 male Vietnam-era veterans, were used to document the prevalence of personality disorders in male alcoholic subjects with and without other psychiatric comorbidity. The results of the personality disorder scales of the Minnesota Multiphasic Personality Inventory demonstrate increased Axis II comorbidity in alcoholic subjects across a wide range of personality disorders compared with no-diagnosis control subjects and across alcoholic subtypes based on psychiatric comorbidity. Implications are discussed in relation to the development, course, and treatment of alcohol disorders.