I have thought about taking a bottle with me, as I get parched partway through the walk, but unfortunately I suffer from a weird, undiagnosed problem where even just a couple of sips of liquid results in me needing to use the toilet at least 5 times over the next hour
Half the time, all that comes out is a mere trickle, if that, and I'll know beforehand that this is all it will be, but I will still have to go because if I don't, I will feel like I'm about to pee myself. That's how bad at is

I've been to countless doctors, but none of them can identify the problem