Studied 110 male patients (aged 15-54 yrs) admitted to the alcohol and drug abuse unit of the psychiatric hospital in Kuwait. Ss consisted of 3 groups: alcohol abusers, drug abusers, and abusers of both substances. These 3 groups were compared for age, education, employment record, psychiatric disorders, history of marital problems or parental dysfunction, and organic illness. Findings indicate a correlation between those who abused both substances and the more severe psychopathological illnesses. Those who primarily abused drugs were younger, were mainly single, had a higher level of education, and exhibited more antisocial behavior. The alcoholics were older, had a higher divorce rate, and demonstrated organic illness with their psychiatric disorder.