I feel that its probable that the symptoms that we link to PTSD today (and shell shock of the past) can arise from a variety of different stimuli. Maybe as we s

I feel that its probable that the symptoms that we link to PTSD today (and shell shock of the past) can arise from a variety of different stimuli. Maybe as we study in closer, we may find subtle differences in the exact responses due to actual physical trauma, versus things caused by psychological factors. The physiological and psychological symptoms and causes could all be linked in a this brutally complex web of causal factors and feedback cycles.