Prevalence of additional psychiatric syndromes among male alcoholics.

The prevalence of psychiatric syndromes among 565 male alcoholic VA inpatients was examined using the structured Psychiatric Diagnostic Interview (PDI). Almost two-thirds fulfilled criteria for one or more additional psychiatric syndromes. Subjects positive only for alcoholism reported a significantly later onset of problem drinking and fewer first-degree relatives who abused alcohol than those positive for one or more additional syndromes. The most frequent additional syndromes were affective disorders and antisocial personality. The possible significance of subtyping alcoholics by the presence or absence of coexisting psychiatric syndromes is discussed.