I do believe it's been around longer than that. My wife had a student in her first year of teaching that today would be call ADHD, I think they just called him hyperactive. That was in 1971-72. His "medication" consisted of a big thermos of strong coffee, to be administered when needed. It worked, most of the time. The other times I think he was being the typical 11 year old boy. Given his home/family situation, poor as church mice, I doubt he got a lot of TV time, even in black and white). I know the one time I interacted with him, he wasn't either hyper or "down", he was just being a brat. he paid for it by having to stay on the bus while the rest of class cavort around a park and zoo. However he was told that if he didn't straighten up, he'd miss the tour of the computer center, something he really wanted to see. He straightened up, albeit with some difficulty, and got to see the computer center. (The IBM 360 room sized computer). I've heard that he grew up OK.
Before I took any kid suspected of being ADD ADHD to a shrink though I'd see an Audiologist or Speech Pathologist for sensory processing disorders testing first. In doing so you get a pretty well uninfluenced opinion away from Big Pharm as they can not write prescriptions.
BTW this is not the same thing as deafness either. But these disorders can wreak havoc on some very primative but powerful responses by the brain which is programned for self preservation.