Parkinsons and polycythemia vera


My name is Peter and I am 63 years old. I have been diagnosed with polycythemia vera back in 2013 and now recently with parkinsons. I have not started any treatment yet as I have only just seen the neurologist. He is going to perscribe tablets which I should receive in about a week. Does anyone know of any connection between polcythemia vera and parkinsons?

Any help and advice would be much appreciated.

Many thanks