Multiple concussions can disrupt brain connectivity: study

Study in young people suggests concussion may be a two-tier disease, researchers say
Reuters Health
Young man scoring a try in rugby

Teens and young adults who have symptoms of post-concussion syndrome after multiple concussions may have disrupted connectivity in the brain’s default-mode network, a study shows.

The findings suggest there may be a number of concussions beyond which it is unsafe to continue playing contact sport, the researchers say.