I am now 82yo. When I was in my 20 I was dx with ADD (no H), I took ritaline for about 5 years and learned how to deal with ADD and lead a very successful and productive live, I still have ADD. About 5 years ago I was dx with PD and take c/l. Now I'm wondering which is the cause of my cognitive changes the ADD or the PD or my "older" age or a combination thereof? Anyone in the same boat?