My girl has a this weird bulge in her neck for a couple days now. It comes and goes and she spends most of her time in her basking spot. She's still easting good tho. She looks healthy besides this bump
You may want to fill out the how to ask for help form. https://www.chameleonforums.com/threads/how-to-ask-for-help.66/ Take the info you put together to your vet so you can give a good history of your husbandry and not have to think of everything there on the spot. Taking a fresh fecal sample with you might also be useful, just in case.