Your feeling is probably correct. The NY Times ran an interesting piece in June covering research indicating that some cases of PTSD might actually be the manif

Your feeling is probably correct. The NY Times ran an interesting piece in June covering research indicating that some cases of PTSD might actually be the manifestation of traumatic physical brain injury: http://www.nytimes.com/2016/06/12/magazine/what-if-ptsd-is-more-physical-than-psychological.html http://www.nytimes.com/2016/06/12/magazine/what-if-ptsd-is-m... Obviously this is an area that warrants careful study, and not jumping to conclusions. I don't doubt that many, perhaps most, cases of returned soldier dysfunction (sorry for the clumsy phrase) are the psychological after-effects of being exposed to the horrors of war. But this new research means we also shouldn't immediately rule out physical damage to the brain as a possible cause. Incidentally this research brings us full-circle, back to some of the theories during WWI about 'shell-shocked' soldiers.