I'm 21. I was diagnosed with ADD when I was about eight years old and was on Ritalin until I was about fourteen. I went off of it, but I'm pretty convinced that I still have it. I don't dare go to the doc for an evaluation because it will disqualify me for military service. Besides, I would most likely get a dishonorable discharge if they think I lied to them two years ago about being better. I'm not saying that I did; two years ago I felt fine. I just think that it's reared its ugly head again.

So, no, you're not alone.