I have this habit of picking at my scalp. I don't pull my hair or anything like that, I just pick my scalp until I get sores and scabs. Once the scabs are there I pick at the scabs. I do this when I'm at school or just watching tv. I pick at my head and scratch it until it is raw even though my head doesn't itch. I have done this for a really long time, even before I started cutting. Is it just a nervous habit or is it a form of SI?
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