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490 BCE
Soldier goes blind after witnessing fellow soldier get killed
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Swiss soldiers with PTSD like symptoms are diagnosed with "nostalgia"
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Text written by James Beard to describe hysteria, symptoms described would now fall into a PTSD diagnosis
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Southbourough Committee conducted a study on "shell shock"1939: The term "shell shock" was dropped by the U.S Army
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Ad published in Life magazine for a medication that could treat colic and "battle reaction and mental trauma
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DSM-I contains category titled "Gross stress reaction"
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DSM-II contains category titled "transient situational disturbance"
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PTSD related diagnoses were omitted from DSM1980: PTSD added to the DSM-III
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Changes in the PTSD diagnosis in the DSM-III-R
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DSM-5 makes multiple evidence-based revisions to the PTSD diagnosis