A sample of 444 girls admitted to adolescent chemical dependency treatment was divided into four groups based on sexual abuse experiences. Girls who reported intrafamilial abuse, extrafamilial abuse, or both, were compared with nonvictims in terms of alcohol and drug use histories. Prevalence and frequency of alcohol, marijuana, and cocaine did not differ significantly among the groups. However, all sexual abuse victims were significantly more likely to regularly use stimulants, sedatives, tranquilizers, and hallucinogens. Sexual abuse victims also reported earlier onset of alcohol and drug use, more self-medication, and more use to escape family problems.