 Indicators and effects include depression, anxiety, eating disorders, poor self-esteem, somatization, sleep disturbances, and dissociative and anxiety disorders including post-traumatic stress disorder.While children may exhibit regressive behaviours such as thumb sucking or bedwetting, the strongest indicator of sexual abuse is sexual acting out and inappropriate sexual knowledge and interest.Victims may withdraw from school and social activities and exhibit various learning and behavioural problems including cruelty to animals, attention deficit/hyperactivity disorder (ADHD), conduct disorder, and oppositional defiant disorder (ODD).