Hyperarousal symptoms of posttraumatic stress disorder (PTSD), including sleep problems, irritability, difficulty concentrating, jumpiness, and feeling constantly "on guard" are associated with anger and hostility in soldiers returning from Iraq and Afghanistan. From interviews with 676 veterans, Eric Elbogen, Ph.D., and colleagues of the VISN 6 Mental Illness Research, Education and Clinical Center and the VA Medical Center in Durham, N.C...
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