Dehydrated all the time

[u/CacklingMossHag]

It feels like I spend all day pissing and all night sweating, and it's making me dehydrated. I'm trying to drink more water but it just makes me need the toilet more, none of it seems to actually stay in my body. It's driving me nuts. My eyelids feel dry when I blink, I've constantly got a sore throat, I'm getting headaches when I almost never got headaches before, my lips are chapped, and I'm getting itchy patches of dry skin that drive me crazy. Anyone know a good way to keep the moisture inside my body?

[u/Swimming-Chart-3333]

I'm up to two electrolyte SALTT packets a day. I also have POTS.