Oh yeah, so it is. It's my leg on October 11, 2011.
It's what my brain injury looked like three days after I slipped and fell in a bathtub.
By most standards, I look pretty normal. Many people who deal with the long term effects of mTBI (concussion) look just fine. You can't see things like memory loss, aphasia, visual, balance, and concentration problems. You can't see the depression or anxiety that shows up at higher rates for those with brain injuries.
My leg healed just fine. It was swollen and ugly after whacking the side of the tub as I fell, but it was fine.
My brain, well, I have no idea what it looks like now, but it isn't just fine. I function well in the world, but I struggle with basic things that you'll never notice unless I tell you about them. It's a quiet struggle - one that makes me feel guilty because I recognize that there are people in the world who have much more severe injuries than mine. Nevertheless, if I ignore it, I won't improve. If I ignore it, I can't help others.
Concussion (mTBI) can be serious or it can be mild. It's hard to tell because you can't see it with the naked eye.
Never, ever laugh it off or wait 3 days to get help, as I did.