I've been inattentive ADHD my whole life but wasn't diagnosed until age 20 because I had decent grades all throughout school. My shrink told me I sounded "too smart" to have ADHD, my parents didn't know what it was, and so I gave up on diagnosis at 15. What people didn't know was that I had to work twice as hard as everyone else, even though I had a high IQ. In High School I could sit through History, a class I thought was VERY interesting, and yet I could not pay attention. My focus would zone in and out and I'd lose the specifics, and thus all the things I wanted to know. I'd start thinking about every conversation I had in the past week, replay movies/tv shows I'd seen, fanfiction I'd read, thoughts I had; because I always did my homework and never asked questions no one knew my troubles. I would take ridiculous notes to get good grades on tests, copying verbatim, but for the most part I was not listening. The teacher would call on me and I wouldn't know the answer, much to my embarrassment and others shock. I'm an INTP perfectionist, learning was and is my life, so it took a huge hit to my self-esteem and I'm still having to fight through my issues. When I got on meds the fog was lifted and everything changed - I can read books now, schools been great, although it's no cure. I still have to work on not being late, getting to bed on time, interrupting people, losing everything, cleaning, sitting through movies, remembering to pay bills, socializing, re-reading material over and over again, sluggishness, decision making, change, small talk, processing what was said, inability to block out background noise, changing focus.... was watching Inception earlier (fantastic movie) but I'm not on good meds currently and it was VERY hard to pay attention - I had to put on headphones, watch it on my computer, put on subtitles, and take 2 breaks. It's not fun believe me. I just wanted everyone to know that ADHD is very real and it hurts when people say it's made up because of media bias, thinking it's over-diagnosed, etc. I would do almost anything not to have it.