In my own experience, the doc was looking for any changes to brain matter. Fortunately, none were found.

I am so sorry O can't answer that. My son was just diagnosed with PD, he is 49 but sometimes I notice his speech a little slurred. At this stage of the game him and I are very satisfied that levodopa helps with the tremors.
He just resigned from a strenuous job at a supermarket and he seems a lot
happier. He has other health issues as well, and it was in his best interest to stop working. Looking for volunteer work without stress/

Maybe a stroke or a brain tumor. Probably isn't that, though. I had the MRI before diagnosis was confirmed.

Hi Peter,
My son war diagnosed in October 2018 with PD, He was working in a supermarket for 28 years, but just like you, the stress was too much and he
retired on 4/29/2019. He will not be able to collect his pension until he is
55 but receives social security due to other medical problems. This was
a very good decision and he made a lot of difference for him, calmer, happier.
Looking for some volunteer work though.
Have a good day