Elvis is not dead
During the eighteenth century nostalgia was generally accepted as a mental illness and attention increasingly focused on the military significance of nostalgia. In those days, living and working conditions in the military were terrible. Cramped quarters, poor scanty food, indescribable sanitary conditions together with severe and rigid discipline were all the impressed men could expect. It is not surprising to find men in such circumstances falling into profound despair, and suffering depression, anxiety and all the other features of nostalgia.