Posttraumatic stress disorder (PTSD) is a bio-psychosocial dysfunction that arises following exposure to traumatic events (combat, traffic accident, natural disaster, etc).

• 创伤后应激障碍(PTSD)是经历创伤事件（战争，交通事故，自然灾害等）后导致的一种生物心理社会功能异常。