I'm had my ball python for two or so months and he has a patchy spot on his back that wasn't there before. I've been trying to diagnose it but I'm not sure if it's a burn or some skin condition and I've had trouble locating pictures like it. He does have a heat lamp(above the terrarium) so maybe he managed to rest against the top for a long period of time? Nothing else is abnormal, no other spots and is eating normally, etc.

Heres the picture