Final answer:
"Shell shock", also known as battle fatigue or post-traumatic stress disorder (PTSD), was the psychological trauma experienced by soldiers who fought in the trenches during World War I.
Step-by-step explanation:
Shell shock, also known as battle fatigue or post-traumatic stress disorder (PTSD), was the psychological trauma experienced by soldiers who fought in the trenches during World War I. It was characterized by a range of symptoms including shaking hands, constant twitching, flashbacks to battle, loss of contact with reality, and fear of unexpected sounds. The condition was caused by the intense psychological pressures of war rather than the shelling itself. Soldiers suffering from shell shock often had to be sent to hospitals far from the frontlines, and the recovery process was slow as psychologists tried to help them reintegrate into society
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