Doll, I have not heard of carpel tunnel leading to Parkinson's disease. Many things can cause tremor. If you decide to pursue the tremor, I would encourage you to see a neurologist - and perhaps a neurologist who specializes in movement disorders ... a Movement Disoroder Specialist or MDS.
I hope you find an answer to your questions.
Life is a dance. Don't sit it out. ---- Jackson H. Brown