TNXP: Phase 3 Study of TNX-102 SL in PTSD to Initiate in 1Q17Yahoo SportsThe Diagnostic and Statistical Manual of Mental Disorders (DSM) of the American Psychiatric Association (APA) first defined PTSD in DSM-III in 1980. The definition has changed three times since then: in 1987 in DSM-III-R, in 1994 in DSM-IV, and in 2013 ...and more »