Or do you really mean your abdomen where the CSF drains into?
I ask because for the first few years the CSF caused a burning sensation in my abdomen
and lower, and eventually my body seems to have adjusted to it because it no longer
causes any pain. Once in a blue moon I do feel the burning from the CSF.
On my 2nd revision the neuro did shorten the length of the tube by pulling it through my body up on my head where the valve is located and that sure helped.
The tubing was touching something in me which caused me to jump up and squirm around.