About one in six combat troops returning from Iraq have suffered at least one concussion in the war, injuries that, while fleeting, could heighten their risk of developing post-traumatic stress disorder, researchers are reporting.
The study, given early release on Wednesday by The New England Journal of Medicine, is the military’s first large-scale attempt to gauge the effect of mild head injuries — concussions, many of them from roadside blasts — which some experts worry may be causing a host of unrecognized neurological deficits.
The new report finds that soldiers who had concussions were more likely than those with other injuries to report a variety of symptoms in their first months back home, including headaches, poor sleep, and balance problems. . But they were also at higher risk for the stress disorder, known as PTSD, and that accounted for the most of the difference in comp
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