reptiles? thats interesting.... good advice.... there, although you may be able to perform the surgery yourself. I've done it twice now and its pretty straightforward (the second time).... full disclaimer, mine is still fighting this off
edit: just saw what Naomi142 is talking about in another...
are you familiar with bumblefoot? look for threads and pics on that. its very common..... the spot on head may be unrelated, or maybe a sign of dehydration? if dehydration, you can try syringing drops of water/gatorade.