So I've been trying like crazy to get to the bottom of my concentration problems. I'm a junior in college, and it's always been very difficult for me to study and learn on my own.

My therapist thought at first it was anxiety, so we did CBT for that and she had me get on Prozac. Yes, anxiety was a huge factor in my life, and I'm a lot happier now, but I still can't focus for anything.

I went back in to the doctor to get my Prozac refill (GP unfortunately; psychiatrists here are on a 5 month backlog) and after finding out everything but my concentration is getting better, she told me to get tested for ADHD.

Here's the thing. I did really well all through elementary, middle, and high school, even graduating valedictorian. I know that, by definition, symptoms of ADHD must be present by age 7 or so to be diagnosed, even in adulthood. If I had it then, would I have done so well in school?

On the other hand, several ADHD-PI symptoms seem to apply to me. I always have several projects at once that are hard to finish, procrastination is my favorite word, I can't concentrate on reading, movies, or conversations, and my wallet, keys, and cell phone seem to grow legs every night because damned if I can find them in the morning. These things have been present for as long as I can remember.

I suspect the reason I did so much better in primary and secondary school was because our teachers gave us lots of specific work to do, instead of the general unfocused task of "Go study." I can't sit there and read or do problems because it goes in one eye and out the other. It feels like if most people soak up knowledge like a sponge soaks up water, I'm a butter knife and it all just drips off instead.

I have ADHD testing set up in January, but I just had to know: any other high performers who weren't diagnosed until adulthood?

EDIT: Oh my God. Thank you. Thank you thank you thank you. I'm not crazy. I'M NOT CRAZY!

I thought "this can't be" when the doctor told me to get tested yesterday because of my track record in school, but I'm identifying strongly with your stories and struggles in adulthood and college. We'll see what testing in January reveals, and hopefully I can get this under control.