Prior brain injury linked to Post Traumatic Head Disorders
Research has previously shown a connection between TBI (traumatic brain injury) and PTSD (post traumatic head disorders). New research demonstrates that prior TBI’s will change an area of the brain called the Amygdala and put them at risk for developing PTSD. In essence this is saying, in the absence of other variable factors, if two people both suffered TBI’s but only one of them had prior TBI’s the person with multiple TBI’s would be at higher risk for developing PTSD.
Very interesting research aimed primarily at the military. I found the study interesting to consider with both whiplash patients and athletes undergoing concussions. Both of these groups suffer Diffuse Axonal Injuries (DAI) and I have seen cases of PTSD with some repeat whiplash patients. The Amygdala has also been suspected of being dysfunctional, this part of the brain is associated with processing of memory associated with emotions, in a very simplified sense it evaluates the emotional meaning of incoming sensory input and it seems in these cases over-evaluates the emotional importance. Fear of driving and anxiety after whiplash injuries are more common than reported in the literature and this research certainly gives us something to think about not only on the battlefield but in the doctors office.