Just like with eating disorders, self-injury is used as a coping mechanism in life. Whatever pain is inside of the person, whether it be from family problems, sexual or physical abuse, or emotional neglect, the feelings are unbearable and can only be released or "forgotten about" through the pain that comes from injuring one's self. The prevalence of self-injury is unknown because many cases go unseen and untreated, but it has been estimated that about 750 per 100,000 persons per year have problems with self-injury. (Rates of 34% and 40.5% have been reported for people diagnosed as having multiple personality disorder and bulimia.)
Self-injury usually begins in late childhood and early adolescence, and although for some it becomes a chronic problem, most self-mutilators do not continue the behavior after 10-15 years. However, self-injury can be a chronic problem if the situation that triggers the victim to cut or hurt themselves continues to stay in their lives.
Cutting is the most common form of self-harm that Childline hears about, but callers also talk about harming their bodies in other ways, such as deliberately bruising themselves, banging their heads against walls, pulling out their hair, burning themselves, falling over, or breaking an arm or leg.
