I've noticed sometimes a few of my BP's will have what looks to be a couple shruken dry scales on the top of their head. At first I worried it was a fungal infection, but it never spread, and went away with the next shed. I don't worry about it now as they get it from time to time, usually right after a shed. Nothing detremental has happened with leaving them be for my snakes. Just up the humidity a little more before the next shed, perhaps you wont see them next time.