I was told awhile back that pd sweating occurred because dopamine is necessary for regulation of the thyroid - among a million other functions. I know I experience sudden sweating oftentimes when my l-dopa level is dropping. It also can happen when I struggle to move because my l-dopa is low - at night, in bed.

On the loss of smell, I noticed that before tremor, etc. ie before I knew I had PD. My sense of smell did come back but it is somehow different - can't really say how, but it is not as keen and is variable.

I suspect you are onto something Rick, re the endocrine thing. After all, the endocrine system is majorly affected by stress, PD's biggest enemy. And it supports my belief that PD starts in the woo-woo zone between matter and spirit - which would be emotions/hormones, wouldn't it? And I think that's why it's so hard to "treat."