Casque burn? All inquiries helpful

#1
I’m very worried about what seems to be a crack developing along my veiled chameleon Cosmo’s casque. I live in Chicago so the winters are extremely cold, in which case I use a different wattage for the heat bulb in the summer vs the winter. I have a good digital thermometer in his basking spot as well as near the bottom of the cage, when spring rolled around and we had an abnormally hot day I noticed his basking spot was way too hot - about 102 degrees, so I immediately swapped the lightbulbs and haven’t seen anything out of the ordinary in temperature since. Where his basking spot remains around 84-91 degrees. But the darkened front of his casque in the last 5 or so months has developed from just the very bottom, all the way up to the top. I’ve been to the vet & they said it wasn’t a thermal burn but I’ve seen on other forums this part of the casque being chipped off almost like a hang nail. All advice, opinions & suggestions would be greatly appreciated.
 

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Graves923

Chameleon Enthusiast
#2
Nothing out of the ordinary to my eyes. Male veiled will using get a black coloration on the edges of their casque. As long as the basking branch is roughly 6 or so inches from the bulb and the basking temps arent way hotter then the recommend temp then he should be good.

I had the same concern when I first got my veiled and noticed this color pattern.
 
#3
Thank you so much for your reply! But do you see the cracking along the top part of his casque? It’s gotten more prominent in the last 3 weeks or so. That is a concern to me.
 
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