Yes I cut for several months, hiding my arms and stomach....I also gave myself bruises on my thighs and arms so I was a real mess for a while there. I wasn't abused, I mean my dad had a temper and would yell alot, but it's not like we were beaten up. The reason I cut was because of SA. When I felt as though I failed in a social situation I would run up to my room and get the pushpins out and you know, punish myself, I suppose. It released all that ANGER and self hatred that I don't know how to deal with. Actually, I'm still not sure how most people deal with anger, or maybe they just have less anger than me? I don't know.
Anyway, it is an addiction. A terrible habit. And the more you let it go and don't get help the worse it is going to get. The deeper you'll cut. The worse you'll feel. It offers only a temporary euphoria.
Cutting is hard for "regular" people to understand. They almost always think you want to kill yourself when it's usually the opposite. In fact, the whole time I dealt with this my father sort of pretended nothing was wrong and I realized the whole situation scared the crap out of him.
So I stopped injuring myself altogether. (with the help of professionals and medication) Haven't done it in more than two months! And now the urges to do it are decreasing so the battle isn't half as hard.