Posttraumatic Stress Symptoms in Victims of the Tokyo Subway Sarin Attack: Twenty Years Later

Abstract

Introduction: Previous studies found that about 10–30% of terrorist attack survivors suffer mental disorders such as posttraumatic stress disorder (PTSD) which persist up to 10 years. However, little is known about whether the effects of terrorism on mental health could last for a longer period or whether physical symptoms and secondary victimization are associated with the persistence of mental disorders. Method: A questionnaire survey was conducted with the victims of the Tokyo subway sarin attack in March 1995 (N = 299). Victims’ physical and ophthalmic symptoms, secondary victimization, and posttraumatic stress symptoms were surveyed. For comparison, those who have experienced a stressful event were surveyed with the same instruments as of victims’ survey except secondary victimization. Results: Results indicated that 21.3% of the male and 36.1% of the female victims were in the high-risk group for posttraumatic stress symptoms (PTSS), which did not differ from those of the comparison group. However, victims had physical and ophthalmic symptoms of greater severity than the comparison group. Moreover, we found that PTSS was strongly associated with physical symptoms and secondary victimization. Discussion: There is a need to develop a support system that would be helpful in reducing mental health suffering of terrorist victims. Providing regular physical checkups and building support for those who experience life changes caused by victimization are suggested.