Saying Hello, Introductions

Hi everyone, I'm new here and I just wanted to say hello and hopefully meet some people who share the same thing I struggle with. I've been picking my face for about 4 years, I guess once I hit puberty and started to get acne. I hadn't made the connection, but for a really long time before I started picking my face I was picking at scabs left from scratching bug bites on my legs. I also used to bite my fingernails, which I think is related to the whole issue of dermatillomania. I also have ADHD, and I take a WHOLE lot of medication for it. I was diagnosed in the first grade, and I started medication (Concerta, in case anyone knows what that is) in second. Come to think of it, after I started medication was right around when I started picking my legs. I've been doing some research, and I think that my issues stem from an imbalance of seratonin. As a kid, I was never able to sleep. Ever. I would literally be up until 4 o'clock in the morning, just lying in bed. Not watching TV, not reading, just lying there. I physically couldn't sleep, and I think that it relates to something with seratonin. I also have some issues with mood and appetite, and this is all related to seratonin, according to wikipedia anyway. At this point, I'm 16 and I just want to be done with this. I don't know how much longer I can go with crying because I can't control the way I look. The thing is, my skin wouldn't be that bad if I didn't pick at it. I would probably be kind of pretty if I didn't pick, but at this point I don't even know. I just can't see past these sores on my face, and things that don't even look like pimples that most people wouldn't even see anyway. I'm just desperate for help, and I feel like I can't do this alone. Thanks for listening (or reading, i guess), if you still are! I'm really looking forward to opening a new chapter of my life where I'm not ashamed of my skin and my face, and I hope I get there someday!