Inference To Causes At first they thought it was a disease that was caused from what came of the bombs that exploded near them.
Real Cause From World War I Trenches. Being stuck in a trench with sometimes people you didn’t know. Watching them get killed. Bombs dropping, while you sit there hoping one does not hit you but continusely shakes the ground. Also, having the thought in your mind that theres no chance you surviving, kind of gets too you.
Still Around Soldiers Still fall to this problem. They only cure is therapy treatment. Another big time of Shellshock besides World War I, was Vietnam.