You can sprain your ankle. Arterial plaques can construct The blood flow to your heart. But we don’t have sufficient understanding of the brain to describe exactly how emotional trauma leads to cognitive injury.
In the past, I thought it possible that PTSD was perhaps and adaptive response to Trumatic environments. The symptoms of restlessness, sleeplessness, and Extreme vigilance seemed like ways that a person could better survive in an environment where dad works around every corner, such as we see in combat, or living out in the wilderness. But the fact that this quote eternal vigilance” never fades, even after the return to a peaceful home, indicates that something has fundamentally changed within the psyche of the survivor. Trauma theory has long recognized this, but the appropriate ways to address drama remain controversial outside of trauma theory because we do not yet have a way to quantify the degree of damage that has occurred. It’s like trying to convince an army doctor that you were injured and that you were hurting, except that your pain does not show up on the x-ray – how can the doctor differentiate between injury and malingering? Often, at least in the military, it is easier to assume the patient is lazy rather than except that the x-ray is incomplete.