George,
I only have one VP shunt and do not feel it's the valve that causes my head to get hot or cold. I feel it's the fact that I have 2 blockages, which I am shunted to where the shunt sends the CSF to my intestines. To me, the non-medical professional, feel that compared to people without hydro, my CSF is alot lower that flows through where it's needed.
What I am trying to say is that since I have less CSF flowing through my head and spine and body, my body has less water to get hot or cold, hence I get cold or hot alot faster than others.
I also feel this is the reason I've been the same 110 lbs since I've been 13. My body is constantly "feeding" off itself.
You spoke of drinking liquor to help, somewhat. I can't do that. I pay dearly the next day. Liquor seems to lower the water pressure in my head more which causes me more headaches in the areas the water is already low.
I'm sorry I feel like I'm ranting and not making sense. That's part of the hydro too. My thoughts do not ALWAYS connect, but they connect enough for people to think I'm somewhat normal.