I would like to know if the Parkinsons advances usually faster than the Alzheimers. My husband can hardly move around or get up out of chair. Usually needs a walker. Yet the Alzheimers seems to come on a little more slowly. The good thing is that he can't walk around getting into things. But then again, I have to wait on him for everything. Anticipate water, etc. Reposition the walker when he wants to move. Still dresses himself even though it takes about 40 min. What about the continual picking at skin? Is this Alzheimers or is it Parkinsons? I'm making an activity apron for him and usually try to encourage long sleeves. But he reaches down the back of his shirt and scratches his back. Any advice you can give me? He is not taking any drugs. Always seems to have a bad reaction from any of them. He is too far gone to want to "maintain" this I would think. Open for comments.