Almost all babies bump their head at some point. Although the majority of bumps are nothing to worry about, here's what ...

A concussion occurs when an impact to the head causes changes in brain cells, including those involved in hearing. While some changes may heal over time, others can be permanent. This is ...

"But there is no place in the game for where the bump actually hits someone in the head. "We've been very strong on this for a long period of time. Going back more than a decade, we've made the head ...