Teenage sexual abuse occurs when an adolescent is used for gratification of an adult's sexual needs or desires. Severity of sexual abuse can range from fondling to forcible rape. The most common forms of sexual abuse encountered by girls include: exhibitionism, fondling, genital contact, masturbation, and vaginal, oral, or anal intercourse. Boys may be sexually abused through fondling, mutual masturbation, fellatio, and anal intercourse. Adolescents who have been sexually abused may also suffer from depression, anxiety, PTSD, feelings of worthlessness and helplessness, learning impairments, and destructive behaviors.