Small Study Sees Differences in Brains of Soldiers With PTSD

New findings about how the brains of soldiers with post-traumatic stress disorder (PTSD) respond to angry faces might help improve diagnosis of the condition, researchers report.

PTSD can be difficult to diagnose because its symptoms vary considerably, the researchers explained. And many of those symptoms -- such as memory loss and attention problems -- are similar to those of a concussion.

In the small study, the Canadian researchers said they found that over-connected brain circuits in soldiers with PTSD made them more attuned to angry faces than happy faces.