From an older book I have titled: "Snakes and Lizards & their care and breeding in captivity" by John Coburn ( 1987 )

"Endoparasites....Whilst wild reptiles, more often than not, may play host to several species of helminth without any apparent disability, the stress of captivity may reduce normal resistance and trigger a massive increase in growth, or in the numbers of worms, causing anemia and general malaise which, if untreated, may result in death."

The paragraph goes on to cite fenbendazole among several suitable drug treatments.
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"A man that should call everything by it's right name, would hardly pass the streets without being knocked down as a common enemy." The Complete Works of George Savile, First Marquess of Halifax 1912,246