Posttraumatic stress disorder (PTSD) is a significant public health problem [4] . About 6.8% of adults develop PTSD in their lifetimes; 3.5% have the condition in any given year [5, 6] . Approximately 10%-50% of the survivors of traumatic events such as earthquakes and tsunamis will develop chronic PTSD [7] , which often persists for years if untreated [8] [9] [10] . The disorder is characterized by flashbacks and avoidance or numbness as well as hyperarousal after experiencing, witnessing, or confronting actual or potential death, serious phy sical injury, or a threat to physical integrity [11] . In addition to these symptoms, co-morbid psychiatric disorders are extremely common. In the National Comorbidity Survey (USA), approximately 80% of individuals with PTSD also met criteria for at least one other disorder listed in the diagnostic and statistical manual of mental disorders-III (DSM-2 Evidence-Based Complementary and Alternative Medicine III) [4] . Patients with PTSD often manifest other complications such as depression, anxiety, obsessive-compulsive behavior, hostility, and paranoid ideation disorders [3, [12] [13] [14] [15] [16] . Co-morbid psychiatric disorders and related subclinical symptoms combined with core PTSD symptoms result in poor general psychological status (GPS).