Im 95 percent sure it isnt cholera. When my group was learning the map we at first drank the underground tunnel water, which at the time wasnt clean (it is now as of today). But since then, ive drank water only from the dynamic water tanks, or ive boiled/purified every bottle ive filled up with unclean water. And ive tried curing it with both multivitamins and tetracycline. Ive tried map hopping to Sakhal in where im still wiping my forehead of sweat while actively freezing to death, ive tried contracting other diseases and seeing if curing those would undo the bugged version of heatstroke, none of it cured my presumed heatstroke. Ill try a new life and see if boiling/purifying the water from the tanks gets me any further, to see if thats a cause as well.