“…Soldiers during the Civil War frequently reported heart palpitations and chest pains, thought to be related to physical stress, prompting the label of soldier's heart, irritable heart, effort syndrome, and DaCosta's syndrome (Birmes et al, 2003;Tomb, 1994;van der Kolk, Weisaeth, et al, 1996). Indeed, Weir Mitchel (1861-1865), a physician during the American Civil War, is credited with the first medical reference to the symptoms that we now associate with PTSD, with his use of descriptors such as fits of hysterics with excessive emotionality, lethargy, withdrawal, and physical and psychological exhaustion (O'Brien, 1998;Tomb, 1994) which were subsequently referred to as nostalgia.…”