Reflections on PTSD's future in DSM-V.

Research findings have fuelled debate on the construct validity of post-traumatic stress disorder (PTSD). Accompanying these issues are competing suggestions to redefine PTSD's criteria, including a recent proposal by DSM-V committee members. We review various approaches to revising the PTSD diagnosis and conclude that proposed changes should be placed in the appendix that the DSM has used for experimental criteria sets.