Dr. Barry Sears Dr. Sears Comments:

Concussion injuries leave lingering neuroinflammation that disrupts neural communication.  This alone would make an inflamed brain more likely to experience additional neurological problems associated with PTSD with additional stress especially those imposed during warfare.

War Studies Suggest A Concussion Leaves The Brain Vulnerable To PTSD

There’s growing evidence that a physical injury to the brain can make people susceptible to post-traumatic stress disorder. Studies of troops who deployed to Iraq and Afghanistan have found that service members who have suffered a concussion or mild traumatic brain injury are far more likely to develop PTSD, a condition that can cause flashbacks, nightmares and severe anxiety for years after a traumatic event.