The issues confronting adult children of alcoholics (ACOA) are well publicized but their empirical basis remains limited. The screening of 250 consecutive psychiatric admissions to a general hospital revealed a significant prevalence of ACOAs across diagnoses. Compared to the other patients, the ACOA group was younger but with no other socioeconomic difference. The diagnoses of substance abuse and phobic disorders were more frequent. The group was psychiatrically hospitalized at an earlier age. The impact of an ACOA status varied with the parental biological relation and gender, and with the premorbid antecedents of parental alcoholism.