Most teens who inflict injury on themselves do so because they are experiencing anger, trauma, stress and/or anxiety. Scratching, hitting, biting, burning their skin, and pulling out hair are some of the other ways teens use self-injury to cope with intensely bad feelings.
The physical pain and the sight of oneself bleeding becomes a temporary solution to ones feeling. (It’s like a temporary solution or fix for the their problems). The pain and the blood overpowers (drown out) their mental pain for a moment. Sometimes their mental pain can be so deep, they have no language with which to describe it to others.
Things to watch for:
1. If your teen is wearing long sleeve shirts in the summer time.
2. If your teen is wearing a lot of bracelets. This could be used to cover up scars.
3. Long stays in the bathroom, open razors or sharp instruments missing from kitchen.
I would recommend parents calling a mental health professional immediately. Most teens don't intend to kill themselves, but teens can cut too deep and cause serious bodily harm or kill themselves.