I think it is great that you acted so quickly and took the lizard to the vet. Trying to get people to take their animals to the vet on these forums is like pulling teeth. I commend you highly!
If you feed your animals anything that is an animal and is not frozen for more than 30 days, you HAVE TO ASSUME it is being exposed to parasites. Herps SHOULD be checked at least once a year.
Would you mind posting back with the diagnosis and treatment? It helps the rest of us keep track of what is exactly happening to our captive herps.
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"I know the human being and fish can coexist peacefully."
Governor George W. Bush, Jr.
"Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us."
Calvin and Hobbes (Scientific Progress Goes 'Boink', 1991)