Yes. (and now I waste my time compulsively typing out 20 characters.)
I suppose I could do this…
The DSM-5 diagnosis of nonsuicidal self-injury disorder: a review of the empirical literature
After all, you are the sort of person that woud actually read it.
With this said, symptoms and pathologies occur on scales from simple habits, to compulsions, to life interfering pathologies. Many people live just fine with their little habits. Just as I live with my nail-biting, and most alcoholics live just fine with their addiction.