My bearded dragon got this weird discoloration after he shedded, and i think it might be yellow fungus. i really have no idea what yellow fungus does, and what to do about it, but here are some pictures.
here is some on the foot he had amputated at a younger age,
Hi Tipsy....the neck area is just showing bright color where it shed, right below you can see distinctly the area that has not shed, so that is just a contrast from an uneven shed. The foot looks like maybe some of the skin didn't come off, so give it some time + that may just shed off. If it would happen to be Y.F., you could get some betadine [ povidone iodine ] from most drug stores, mix it with water until it looks like iced tea and then dab it on those areas with a Q-tip. But right now it doesn't look like anything, but....just keep an eye on the foot.