What is the difference between Parkinson's disease, and Parkinsonisn and familial Parkinson's?
That question is answered on this site:
https://www.myparkinsonsteam.com/resources/park...
Familial Parkinson's
https://www.google.com/search?rlz=1C1CHZN_enUS9...:(Phone number can only be seen by the question and answer creators)&q=familial-parkinson%27s-disease&spell=1&sa=X&ved=2ahUKEwjqo7b9h_z5AhWxlmoFHcq1B44QBSgAegQIARA2&biw=1231&bih=591&dpr=1.3