do you think this is caused by Parkinson's

Hi, my dad is 73 and is in advanced stages of Parkinsons. Just recently he has been waking in the morning with white fingertips, they have absolutely no circulation and are numb. Once he gets the circulation going again he gets pins and needles. someone told him that it was his Parkinson's, but I've read through a heap of literature and can't find anything like this mentioned as a PD symptom.....constricting blood vessels yes, but this, no....its very distinctive. Has anyone else heard of this?

Wow...my PD husband's fingertips get blue but resolves after he is up and about and I just thought it was one of the myriad PD issues...guess I had better ask the doc. thanks yekkimo.