It's likely that the other post is correct, and it's just wintertime. BUT, just in case, can you let us know a few more details? How long have you had the lizard, how old is it, when was its last vet check, how large a tank, what kind of lighting, what are the basking, ambient, and cool side temps? If there is a problem (and there may not be), this will help folks pin it down.
Also, if he's not eating any greens, you might want to ease off on the crickets, too, until greens are accepted again. The greens are more important than crickets.
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Torey
Eugene, Oregon, USA
1.1 Uromastyx Geyri (Joe and Arthur)
2.0.1 Uromastyx Dispar Maliensis (Tank, Turtle, and new neighbor Spike)
1.2 Anolis Carolinensis (Bowser, Leeloo, and Sprocket)
1.1 African Dwarf Frogs (Bruce and Sheila)
1.0 Betta Splendens (Mr. Miagi)
1.1 Felis Domesticus (Roscolux and Jenny)
And several miscellaneous community fish
