The new edition of the Journal of Anxiety Disorders (2007, Volume 21, number 2) is a special issue "Challenges to the PTSD Construct and its Database." Apparently, recent research raises a number of questions regarding PTSD such as: Is PTSD caused by traumatic stress? How is dissociation related to PTSD? Why does the NVVRS study show that 30.9% of Vietnam Vets developed PTSD when only 15% of them were assigned to combat units? Is there a problem with "pseudo-PTSD"? and Do diagnostic criteria for PTSD need to be revised?

This certainly is a topic with potential for heated debate.