I was almost never around doctors as a child. No diagnoses of any kind for me back then, though I'm sure I had a few problems.
ADHD was probably not one of them, but I was always up to no good, climbing, fighting, making things, and being outdoors. Not sure there's anything especially odd about it for a boy.
Maybe newer generations of parents just expect their kids to sit quiet in a corner and dose them up with drugs if they don't. I've seen people complaining about 2 and 3 year olds in a kindergarten acting just like kids do, far as I know.