Rachel Yehuda, PhD

In addition to psychosocial problems, there is a growing realization that PTSD may also lead to or exacerbate chronic medical health conditions.

PTSD filled a nosological gap by providing a way to characterize the long-lasting effects of trauma exposure.1 This led to a plethora of previously lacking scientific observations. Now the existence of PTSD is being called into question because some of the original assumptions that helped make the case for it have proved to be incorrect.2-4 However, it is possible to update some of the flawed assumptions of PTSD without rescinding the diagnosis. There is no reason to throw the baby out with the bathwater.

The majority of people experience acute stress symptoms following trauma, but the development of posttraumatic stress disorder is the exception rather than the rule. Some investigators hypothesize that PTSD develops following increased nervous system response to trauma. Why only a minority of individuals experience this response, what their risk factors are and when should they be treated is the subject of ongoing research.