When has a person had too many concussions? There is no definitive answer but with each additional concussion comes more danger. Learn more about the effects of cumulative concussions.
See more videos with Dr. Jeffrey Barth.
Posted on BrainLine July 29, 2010. Reviewed December 20, 2017.
Produced by Vicky Youcha and Brian King.
About the author: Jeffrey Barth, PhD
Jeffrey Barth, PhD, is a Professor Emeritus in the UVA Medical School and the Brain Injury and Sports Concussion Institute.