To me it looks like a over exposure burn but I could be off - UVB's are not hot enough to burn unless they are in contact a long time - a ceramic heater will burn really bad as I have touched them and they get super hot burning instantlyMy son and I modeled his terrarium setup using the "Light & Shade Method" described in the Arcadia Reptile article located at the URL below. My understanding is the T5 HO bulb(s) provide full-spectrum visible light plus UVB, while the ceramic heat emitter(s) provide heat; all of which are required to facilitate the D3 cycle (see URL below). If I'm understanding correctly, your suggestion is the bearded dragon needs additional full-spectrum visible light, right?
Light & Shade Method - https://www.arcadiareptile.com/lighting/light-shade-method
D3 Cycle - https://www.arcadiareptile.com/lighting/d3-cycle/
As a tangentially related follow-up question, do you think the problem area on my son's bearded dragon looks like a contact burn (i.e. from touching a heat source) or an overexposure burn (i.e. from too much UVB)?
here is some info on the basking bulb and why and what you should use --
What type of bulb makes a good basking bulb? Why do I need one? A basking bulb is essential for keeping your bearded dragon warm and helping it regulate its body temperature. Basking helps beardies to digest their food and maintain their metabolism and immune system. Experienced bearded dragon...