I’ve got numerous scars on my scalp from bumping my head on ... but they’re easy to put in your cap for as long as you’re working in places without a lot of head clearance.

The news was jarring, to say the least. How can a bump to the head feel benign enough to disregard in favor of some shut-eye, then wipe you out while you sleep? Aren’t there signs it’s serious?

It's hard to walk through life without bumping your head more than a few times. From "failed" attempts at first steps as a baby to unseen, literal low-hanging fruit in adulthood, accidents happen.

Scott Walker has spoken about his bald spot on several occasions US Republican presidential candidate Scott Walker says the hairless patch on his head comes from a scar he received from bumping ...