Parkinson's Or Pinched Nerve ?

I am newly diagnosed with PD (poor handwriting was the principle complaint). My visit with the neurologist was short: after a brief exam, he informed me that I had PD, wrote a prescription for Mirapex, a dopamine agonist, informed me that it was his duty to tell me I may become a pathological gambler, and I was out the door in complete bewilderment.

I thought I had a pinched nerve from a 2 y.o. tennis injury. I still do. I also have poor blood flow in my right arm. The movement in my right hand fingers returns in the morning, if I strain my elbow, or lift my hand over my head. I had previously had a CT scan of my neck and it showed pronounced osteophytic narrowing of the right neural foramen for C4-5, C5-6, and C6-7.

BTW, I am 59 y.o. and very active physically. I work all over the world as a consulting engineer. It is a great job and one I would like to keep doing for several more years.

Anybody have any comments? Is it just wishful thinking on my part?