Post-traumatic stress response refers to the psychological disorder sequelae after encountering or resisting major stress, but this phenomenon is the reasonable result of experiencing trauma, not the original problem of the patient's psychological state.
According to the above definition, which of the following is not a post-traumatic stress response?
Xiao Wu narrowly escaped death in the earthquake. As soon as he heard the sound of the floor, he was very nervous and worried that he would fall and hit himself.