This problem seems to be like an elephant in the room that nobody wants to acknowledge. I have seen friends of mine go through this. I see more and more people struggling with this self mutilating behavior. It has become popular. The point is, many want to ignore or judge those who do it; they see it as some type of immature attention seeking behavior for emo or goth teenagers.
It is a cry for help and comes from such a deep place of heart pain, and should NEVER be ignored.