strange impaction in bearded dragon

Question
Hi, I. Have a 2 year old beardie. She has had trouble with bowel movement in the last 6 months. Recently the last two movements,(witch were a week apart) have included a large sized,pill shaped, objewct that resembles a stone in density. Besides the white "urea". Upon investigation, it appears as if it is some sort of "deposit", white in color. Maybe some sort of undigested calcium deposit? I am sure this is what is causing the "delay" in her pooping, as it seems clearly an impaction. Please, any advice as to what this may be and how to fix it would be greatly appriciated. Thanx in advance.

Answer
Hello Brandon,

What type of substrate are you using, sand, paper towels, tiles?  
What type & brand of UVB light are you using, a fluorescent tube bulb or a compact/coil light?  How old is the UVB light?
What type of calcium do you give her & how often do you give it?

So, does she eat any vegetation at all, or drink any water?  I would start bathing her several times a week, as well as try to get some oral fluids into her with a plastic dropper or a plastic syringe.  It sounds like she is really dehydrated.
What type of foods does she eat, roaches, crickets, worms?

Does the long white urate looking stool resemble an infertile egg or just a calcium or urate build up?

Tracie