Obsession with plucking pubic hair?

For the last year or two, I've had an obsession with plucking my pubic hairs (sometimes other areas of the body, too) out with tweezers. I know it seems strange and I've been too embarred to talk to anyone about it so far, but have been doing some "googling" to see what might cause it and am curious to know more. It's becoming an obsession, to the point where it's the first thing I'll do when I come home and I'll often spend an hour or two a day doing this. It seems relaxing and feels good to pull out the hairs that are somewhat still under the skin, or places where two hairs are sharing a pore. It seems like it makes it "right." If there's a noticeable follicle on the end of the hair, I get excited and it feels like a "success" to get this out of my skin. Sometimes, especially after I've shaved recently, the hairs are deep in the skin and I'll pick and dig until I can get them out, then I feel a sigh of relief. I have many scars on my genital region because of this--I'll dig and dig until it's bloody, but I won't give up until I can get the hair out from under the skin. Then I feel at ease and can quit. My "tweezing fingers" (middle and thumb) are always sore and callused from plucking so much. I always have scabby, bloody, scarred areas in my genital region all the time and am starting to think I should see a doctor about this. Anyone know what this might be (trichotillomania, perhaps?) and what causes it? How is it treated?