>>219No, ADD is a sub-diagnosis and the two are mutually exclusive. The new name is ADHD-PI.
They are quite real, it's defined as a quite often drastic shift in intelligence away from things that involve working memory and executive functioning. It may or may not cause problems in daily functioning and social interactions. It's visible in CAT scans, where areas in the brain involved with attention and directing focus will be smaller.
In my case, I have a far, far beyond average intelligence when it comes to matrix tests. I've had social problems, but they've been largely because of bad circumstances and upbringing. I still display some traits of aspergers, but it's within what's considered normal, and can be attributed to the ADD. I've become a lot better at socializing, not that I was inept before, but I was weird. Definitely in part due to my ADD though. Losing track in conversations can be stressful in one on one and isolate you in group conversations.
It's very real. I don't respond well to most stimulants though, and not to the ones prescribed. Nicotine is the one thing that helps slightly.