Child sexual abuse is a particularly menacing type of trauma. It can lead victims to post-traumatic stress disorder (PTSD). Child sexual abuse is prevailing significantly worldwide. Child sexual abuse can be identified under different types and settings. Signs and symptoms of child sexual abuse can be divided in to four groups as physical, behavioural, emotional and sexual. PTSD, dissociative disorder, anxiety disorders, drug and alcohol addiction, conduct disorders and high-risk sexual behaviours can be identified as chronic effects of child sexual abuse. Cognitive behavioural therapy, Child-centred therapy, Trauma-focused cognitive behavioural therapy, imagery rehearsal therapy and eye movement desensitisation are effective interventions in treating child sexual abuse.