I am 65. My mom has passed on but was on sinnemet for some years. She was given some other drugs as well that did not seem to be particularly effective. She was not dx until she was in her early 80's. I am not sure what her early signs were. Probably she didn't recognize them for what they were. Information is more readily available to us today with the internet. Not sure if that is good or bad!!
My cousin is 78. They have revised the diagnosis several times and now say that he has Parkinson's Plus syndrome specifically Supra Nuclear Palsy. He became aware of difficulty around 72. Diagnosis was changed I believe after he did not respond to typical Parkinson's drugs.
AS far as I know my mother's cousin had typical PD. As you can see I could have some scary genes! Have been blessed with good health so far so am thankful for that. I do not dwell on the possibility but ofcourse when something that might indicate a neurological problem surfaces I can't help but wonder about it.
How long have you been dx with PD?