The person experienced, witnessed, or was confronted with an event where there was the threat of or actual death or serious injury. The event may also have involved a threat to the persons physical well-being or the physical well-being of another person. Traumatic events also known as traumatic experience, psychological trauma.
People respond to traumatic events in different ways. Often, there are no visible signs, but people may have serious emotional reactions.
At the time of a traumatic event, the person experiencing the event might feel numb and, therefore, not know how to respond. Later on, memories of the trauma can bring out feelings of helplessness, fear, even horror -- like you are reliving the trauma all over again.