Case records were retrospectively reviewed for 40 adolescents presenting to a paediatric sexual abuse service with a history of acute (23 cases) or chronic (17 cases) abuse. The chronic cases disclosed the abuse to a family member, the abuse was intrafamilial, and they had similarities to the chronically abused younger child. The acute cases disclosed the abuse outside the family, and were abused by strangers or acquaintances. Some acutely abused adolescents had similarities to child victims of stranger assault; however a larger sub-group was identified (14 of 23; 35% of total) whose indescriminate behaviour may have placed them at increased risk of abuse. They were characterized by previous contact with police and welfare agencies, alcohol/drug abuse, voluntary sexual activity, contraceptive use, genital infections and apparent indifference to the abuse. Half the total group felf emotionally unsupported, and four subsequently attempted suicide. This study identifies unique problems of sexually abused adolescents, and recognizes potential multiple problems in those acutely abused.