I’ve now had PD for about three years but it’s really only been in the last few months that this seems to have become a real issue, even a problem for me. It’s especially concerning since I’ve got a co-morbidity — with diabetes, which I’ve had for over twenty years (21 in fact). One of the problems that can happen with diabetes, long-term, is deteriorating kidney function — and naturally enough, dehydration can aggravate this kidney dysfunction. Not good news! (and this is from somebody who makes sure they always have water available to them). The need to urinate frequently, part of PD, must also contribute to the problem.