For a few years now I have been constantly fighting an overwhelming compulsion to pick at scabs on my scalp. I think it started with one scab from a cut I got on my head, and I guess I picked it and whenever it would turn into a new scab, I would just keep picking at it. I did it so much that I started to pick at other places on my scalp without even thinking about it, and I actually formed cuts on my scalp with my nails so that they would turn into scabs and I could pick those, too. I go in and out of phases where I'll have a lot of scabs on my head that I'll pick, and then I'll get sick of it and let them heal and I won't do it for a few months or whatever. But I always start back up again. I mostly do it when I'm alone, but I sometimes catch myself doing it in public and I feel like people notice! It's totally embarassing....I have a feeling it's not normal. It's not, right? How the eff do I stop doing this??? Help!