I was diagnosed with ADD when I was 18. I can't stand the meds though. Diet Coke, indeed.
But when it comes to math being difficult, it's not. It's all about the teacher. If you have a teacher that wants you to understand, you'll understand. But if you have a teacher who wants to shove out the info and move on, that's exactly what your brain will do. I suggest (if you have the ability) to talk to students who have already taken the class, preferrably some who have had different teachers, and find out which one is the most lively.
Seriously, I hated Precalculus in high school. Couldn't pay attention to the boring teacher, so I didn't understand. I fell asleep in class a lot. I finally got a teacher my senior year who was loud and kinda offbeat and actually funny, and he held my attention just fine. I got an A in that class. Since leaving high school, my study skills have improved somewhat. I'm almost a straight A student at my college. A few B's.
My main problem with ADD is that for most people it's not a reason they are the way they are, it's an excuse for why they aren't the way they want to be. I actually have a friend who used to speed and drive like a maniac, narrowly missing cars and people, and whenever I could spout out syllables to articulate my feelings, usually like "JESUS FING CHRIST," he'd just shrug and say "Sorry. ADD." Then I'd tell him he was an idiot.
