A lot of ADD people can "hyperfocus" really well, where a bomb could go off in the room and they (almost literally) wouldn't notice. In fact they might do this sort of thing for hours. That alone wouldn't mean you have it, but just to say that you being able to focus on certain things doesn't mean you don't have it.
Very interesting about the hyperfocus - that is the way I am with reading. I read 3 or 4 books a week normally, but I am ADD.
I'm fortunate that I have been aware of it for a long time and try to work with it. It is the greatest source of my creativity - an unending curiosity to learn how to do everything then set it down and go on to learn the next thing that catches my eye.
I can teach dance, make my own soap from scratch, sew complicated figure skating dresses, knit, crochet, paint and do enough carpentry to do things around the house my husband doesn't get to. This year I took the Master Gardening Certification class just to prove to myself I could commit to a semester long program and finish it. Who knows what will catch my eye next.
In my professional life it has been a disaster. I'm lucky that we have our own business now and I haven't fired myself :).
Thru trial and error I found a combination of medications that work for me and I order those online. I haven't tried the Straterra yet to it sounds tempting if it would work.