Just to what you experience as dehydration:
If you are dehydrated, your skin STAYS, and does not drop when pinching a fold of skin/lifting it up.
If your skin is dry, it is less due to its hydration state, more to the state of fat lipids. So, im not sure you are on the right tract regarding dehydration. How about talking to your doctor?
And, when you write: Fluconaze, do you mean Fluconazole (diflucan)?
Diflucan gives dry skin as a side effect, especially dry lips. What amount of mg’s are you on?
If you are taking diflucan, most of your trouble could be linked to this, and will subside when you get better or if/when c. albicans get more resistant towards diflucan.
Add in some nettle leaf tea for you liver please 🙂