Self-injury can be many things that people do to themselves in a deliberate and often hidden way like cutting, burning, overdosing, scratching, biting, hair pulling and breaking bones.
Sometimes people think they are the only ones doing it but research shows that it is very common.
In the UK at least one in every 15 young people has experience of self-injury. That is two young people in every classroom.
Why do people self-injure?
Girls and women self-injure for all sorts of reasons, but often it is because feelings like anger, sadness and fear have got too painful to deal with.
Sometimes girls self injure because of pressure and stress from things like relationships, family problems, school, sexual worries or as a way of dealing with horrible situations like abuse or the death of someone close.
You may not know why you self-injure. If you think back to the first time, then you may understand what made you start.
Notice what is going on for you when you get the urge to self-injure and you may get clues as to what your self-injury is about.