Is ADD obselete, or is ADHD overdiagnosed instead of the former?

I know a young adult who shows many signs of ADD. His brother has ADHD and has tried to convince his parents that his younger brother has ADHD. (That's a story in itself). My problem is that ADD can explain similar symptoms to ADHD and yet has differences too that explain more about the younger brother.
Is over-diagnosis of ADHD pushing ADD away from treatment and diagnosis options? I wonder somtimes if ADD would be in the next DSM edition...

The current DSM is the DSM IV TR. ADD has already been taken out of this version. Now there is only ADHD, but there are several types: inattentive, hyperactive, and combined type. So what was previously ADD is now most likely ADHD inattentive type. Hope that sheds some light! :)

Personally I think both ADD and ADHD are overdiagnosed.

No it's not obselete, my (adopted) sister has ADD (diagnosed a few years ago) and my (adopted) brother has mild ADHD (diagnosed within the last year).

It's definitely overdiagnosed but in our case there's no mistaking that it is ADD/ADHD - if they do not take ritalin the change is immediate, and my sister has said she cannot control her behaviour if she has not had her ritalin. My brother can't concentrate at school and they both contstantly look for attention in any way possible if they don't take it.

I think I have ADD. Since I've been in college i've found it extremely hard to concentrate on my school work. I know it would b really hard to get diagnosed since I'm 19 but I think I have a problem....

Around 1980 or so, the term ~ the Hyperkinetic Syndrome of Childhood (~ Hyperactivity) was changed to ADD (~ Attention Deficit Disorders); around 1994 or so ADD was changed to ADHD. That's where it is today. There are three official types of ADHD today (2008).