breaded dragon gone lazy

Question
hi i have a breaded dragon and i think is a male and about 20weeks old. he is about 9.5inc long and normal quite active but the last few days he doesn't bother with his food.i thought it was just because he was shedding, the day he shed his skin he eat well but the past 2 days he has only eating 2-3 hoppers.

He looks really lazy and hides under a log for most off the morning then would come out for a bit and sit in his log in the middle off the tank basking. he mostly lies basking with 1 eyes closed, at night he would go 2 the corner off the tank and try to dig him self in. i took him to the vet and she could not see anything wrong with him and gave me a electrolyte and probiotic energy drink to try and pick him up a little.

I have read up and checked up on everything i need. i have a 100w bulb that is leaving his basking spot at about 100f and about 90f on the other side, i have a repti-glow 10.0 uvb- uva tube light, i also have a small water fall in there for him, his water dish and his food dish. my tank is a 3ft tank so he has plenty off room in there. can you advise me on what 2 do.

Thank you

Answer
Hi Norman, Your dragon is somewhat too young to be displaying signs of brumation (the winter slow-down similar to hibernation), but your description of his behaviours does suggest that. I would definitely take a fecal sample to your vet to check for intestinal parasites, namely coccidia and pinworm. These are both extremely common with beardeds and can cause a drop in appetite and activity.
A couple suggestions about your set up as well. I would re-check both your temperatures with a different thermometer. A 100W light seems unlikely to provide a 90F temperature at the far end of a three foot tank. If your cool end is actually 90F, then that is too warm. You need to try to provide a larger temperature gradient, he should have a area that is no hotter then the low 80'sF that he can move to.
I would also be concerned that the water fall may be providing a higher humidity level then is healthy for a bearded, they evolved in arid and semi -arid environments. You may be risking future skin and respiratory infections by having overly high humidity.