I would recommend a course of treatment for him using Thought Field Therapy. This is the first of the Energy Psychology methods, discovered in the '70's and is effective for trauma, anxiety, depression and related emotional states common in trauma victims. In addition, I would seek out Family Constellation healings. I have seen long-term and fast (during or just after the sessions) improvements using these methods. I do not recommend variations on these, but the original application of them. Look up: rogercallahan.com for TFT and cheryl Walker or Gary Stuart for the constellation work. Practitioners such as Joanne Callahann, Suzanne Connolly would be great.