Lethargic Water Dragon

My Chinese Water Dragon, Axel, has lately been acting extremely lethargic, sitting with his eyes closed constantly, staying in uncomfortable/unnatural looking positions, and refusing food that is provided. His cage tempretures are the same as usual (I've had him for four years, nothing has been changed.) and he's been offered the same amount and types of food. (Mealies/supers/crickets with occasional waxworms. He's never taken veggies.) His ribs are slightly more prominate as usual as well, but his tail/arms/legs are skinnier than normal.
I have him in a hot bath right now, to see if it will stimulate any movement, (and also to get off a little bit of stuck shed on his toes.)
He's in an 100 gal., and is on a mix of dirt and sand as I found online some odd years ago.
If he continues like this tomorrow, we'll be taking him to the vet, but I'd like to have some sort of knowledge of whats going on before I take him there. :// Thanks.

That sucks! when mine went off food and was acting weird she layed eggs :O

not saying that is what the deal is but hopefully the vet can see whats wrong. any signs of breathing problems?

Breathing is fine.
Hopefully he doesn't lay eggs, as I'm 100% certain its a male. ;D

Could be compacted. Do you have pics of him and his setup?

I don't, but I could take pictures.
It would seem weird for him to be compacted though, as I've had him on this set-up for over a year, and he never gets fed in his cage.

Don't wait to take him to a QUALIFIED VET. You know your leeezard better than us. You know there's something wrong and it's best to finds out sooner than later so he can be saved.

Qualified Vet