Luki

ok, I have this little problem, have had it for as long as I can remember, my mom tells me I used to do it in my sleep when I was a baby.

Tonight I was sitting at the computer and I realized I was scratching my leg. So much so that I was begining to bleed. This isn't the first time I've made myself bleed like this, I do it in my sleep. In fact I've done it for so long that I am ashamed to wear shorts, skirts or even a dress of any kind, for I have many scares from where I've "scratched myself raw." My mother has caught me many times uncoscously scratching(mostly the lower part of) my leg, typically my calf or shin.

I have no health insurance and it's not a lotion or soap or detergent I'm allergic to, they thought that when I was little, and ruled it out. It rarely occurs anywhere else on my body(occasionally my lower back). It's not a rash or a bite, I don't believe it's an allergic reaction to anything. Most of the time I don't even realize I'm doing it. In my sleep I use my feet to scratch(and my toenails are good for tearing up my skin really bad).

What are some possibilities? What would/could cause this kinda thing. Is it possibly something mental like OCD instead of something like physical? This is kinda bothering me, I'm not that old and I really don't want to have these huge gashes in my legs from scratching myself so much.

Please if you have any help or advice that would be great.