Embedded below is a video from ESPN's E:60 show about a popular high school athlete who experienced a second concussion before the first one was healed. The damage to his brain and body are expertly shown, including a photo of when he had to have part of his skull removed in order to help deal with the swelling of his damaged brain. If you have not seen it, it is quite powerful as it shows both before, the event, and his recovery and rehabilitation afterward.
posted by Chuck Schallhorn