I couldn't get a good picture of it, but there are a few places where there's just a raised scale away from anything else. I know this shop does feed live, but they have several herp-intelligent people there who do supervise the feedings. Do rodent bites go straight to looking like this, and not showing any kind of wound/blood?

Someone else brought up the idea of ticks. If he'd been infected with ticks, would it leave raised scales? I didn't see any bugs on him (mites or otherwise) but since he was recently treated at the pet shop, I have no idea if that would have knocked out ticks as well.

(and yeah, I always treat newcomers with PAM no matter the source. I'd rather just stock up on prevention and never have to deal with annoying bugs.)