My elderly Dad has been visiting the geriatric specialist for a few years and I'm not really sure why ( long story, we don't really talk about illness) but when I asked him what they do he says they measure his head and I'm wondering why. I suspect he has the beginnings of parkinsons as first went to the doctors with leg pains and he is now shuffling quite badly, hes 78. What are the early signs of parkinsons and what will happen over the next few years if the shuffling is the beginning.