Thanks for the query to H.C.M. Forum.
But once again thanks for describing so nicely , the history of illness.
The tremors at rest is maximal at rest and characteristic of parkinsonism and is commonly associated with BRADYKINESIA (slow abnormal movements) & cogwheel rigidity.
2nd symptom is dementia
, so be careful about that.
In my opinion consult a physician / neurologist
and get their opinion and M R I .