- Published28 Feb 2018
- Reviewed28 Feb 2018
A traumatic brain injury happens when a violent jolt or blow to the head causes the brain to slam into the skull, tearing neurons and bruising tissue. Traumatic brain injury in contact sports is a growing public health concern, as dizziness, memory loss, and changes in mood can occur — and can last from a few hours to several months. Click on the images below to learn more about traumatic brain injury.