The act of
deliberately inflicting harm on ones own body without suicidal intent or plans of bodily modification (eg. piercing your ears isn't self-injury). Typically self-injury is practiced to block mental pain with physical pain, or to provide the self-injurer with something that they can feel if they are
emotionally numb. Common forms of self-injury include cutting with a sharp object such as a razor or a knife, burning (with an open flame, chemicals, a heated object (
technically, this is branding, not burning), or friction from rubbing with an object such as a pencil erasor), scratching or scraping, and hitting (whether with ones own hands or another object).