Child abuse is when anyone under 18 is being harmed or isn't being looked after properly. Sometimes a young person can be abused by a stranger or by another young person, but usually they know the person who is hurting them or making them do things that they should not. They can be abused anywhere; at home, at school, a local sport centre or after school club. Sometimes someone else knows what is happening, but they don't stop it. This is wrong too!