(Redirected from Psychological First Aid). Psychological first aid (PFA) is a technique designed to reduce the occurrence of post-traumatic stress disorder. It was developed by the National Center for Post Traumatic Stress Disorder (NC-PTSD), a section of the United States Department of Veterans Affairs, in 2006.t was developed in a two-day intensive collaboration, involving more than 25 disaster mental health researchers, an online survey of the first cohort that used PFA and repeated reviews of the draft. http://www.ptsd.va.gov/professional/manuals/psych-first-aid.asp.