Golfer with parkinsons

Patient: Hello, I am a golf professional in Pennsylvania and i have a student that has Parkinson’s disease. I am looking to gain a little knowledge on the disease as far as what the disease does to the muscles and What he can and can not due as far as movement goes. He is a left handed golfer and the tremour is in his left arm im not sure if that is important information figured the more I can give the better.

Symptoms: Tremours, Parkinson’s disease

Doctor: