By a neat sleight of hand, many doctors defined ' shellshock ' as physical shell concussion, and excluded it from this category.
Each year, high school athletes sustain 300,000 head injuries, of which 90% are concussions.
Cracked ribs, melted computer disks, concussions and broken noses have come from their constant fighting.
A retrospective survey in 2005 suggested that more than 88% of concussions are unrecognized.
Use of protective equipment such as headgear has been found to reduce the number of concussions in athletes.
After suffering several bad concussions while playing soccer, he gave up the sport and became interested in writing and theater.
A minority of retinal detachments result from trauma, including blunt blows to the orbit, penetrating trauma, and concussions to the head.
Another type of check that accounts for many of the player to player contact concussions is a check to the head.
