It's relief through release. Most people Self-Injure to relieve some unpleasant emotion, ranging from anxiety to depression . There are many speculations about why people Self-Injure.
Some experts think the behavior stems form childhood trauma or abuse.
However, statistics don't support this theory. The backgrounds of people that SI are varied, coming from both abusive and non-abusive households. People also cited the need to feel real among their reasons for self-injury. Hurting themselves makes them feel something, where they otherwise feel numb to the world around them. Unfortunately for the Self-Injurer, much social stigma surrounds the issue.