A friend pointed out this story on a little girl who is congenitally insensitive to pain.
Though they didn't seem to say so in the story, the sad thing is she probably won't live past 20. Even when they get kids to avoid hurting themselves, they don't move enough when sitting and sleeping (we constantly shift our positions when they become uncomfortable to take some of the stress off the joints). That leads to some pretty horrific (and fatal) infections from the joint tissue.
Categories: Congenital insensitivity to pain