
There wasn’t a diagnostic capability to identify mild brain injury early after the trauma until recently. In the NFL, other professional sports and especially school sports, concern has grown about the long-term neuropsychiatric consequences of repeated mild Traumatic Brain Injury (mTBI) and specifically sports-related concussive and sub-concussive head impacts.’
http://feeds.sciencedaily.com/~r/sciencedaily/~3/-MW05CFr-Ag/141124103227.htm