The act of deliberately hurting yourself falls under the terms of
self-injury, self-mutilation and self-harm.
Many people who self-harm do not even know they are doing it.
For example, some people pinch themselves until they create a scar or
pick at their toenails or fingernails until they bleed.
Self-Injury usually indicates that somewhere along the line, you didn't
learn healthy ways of coping with overwhelming feelings. You're not disgusting
or sick; you just never learned positive ways to deal with your feelings.