Hey no worries.
He developed a plantar wart on the bottom of his foot kinda in the meaty part behind his ball of the foot from running, just kinda where the arch starts. A callous formed over it. Our family doc accepted him going in after a phone screening and he blasted it off with liquid nitrogen and it’s healing well. It was never an issue on the bike but it bugged him while running.
Hope your boy gets better soon.