In his book chapter Beyond the Universal Soldier: Combat Trauma in Classical Antiquity, Dr Jason Crowley argues against the commonly-held idea that sufferers of PTSD can be found as far back in history as Achilles and Odysseus.Having looked at Crowley's bio (here), he's obviously a very young academic, and so whilst one should encourage new researchers ... as someone who's been diagnosed and treated for PTSD, and has a decent knowledge of history, I think he is talking out of his arse.
PTSD may be a 'new' label, but shell shock is pretty well documented during the first World War and there are plenty of descriptions of the symptoms from Antiquity that are clearly PTSD, so no, it wasn't 'invented' after Vietnam.
I've blogged about ancient PTSD here and here and briefly here ... but if you don't want to take my word for it, take that of Dr Jonathan Shay, who has decades of experience working with people suffering from PTSD and can speak from experience. The BMCR review of his Achilles in Vietnam is here; Achilles in Vietnam at Amazon UK and Achilles in Vietnam at Amazon US.
I can respect people having different views on most issues - for example who's buried at Amphipolis - but it takes a prize twat to dismiss a well attested and well studied illness that so many of our veterans suffer from. When everyone else is campaigning for better treatment for veterans, one has to wonder what kind of narcissist insists on pushing this kind of crappy pseudo-scientific nonsense - and why