Trauma

The word “trauma” literally means wound, shock, or injury. Psychological trauma is a person’s experience of emotional distress resulting from an event that overwhelms the capacity to emotionally digest it. The precipitating event may be a one-time occurrence or a series of occurrences perceived as seriously harmful or life-threatening to oneself or loved ones. People process experiences differently, and not everyone has the same reaction to any event; what one person experiences as trauma may not cause distress for another.

Traumatic experiences undermine a person's sense of safety in the world and create a sense that catastrophe could strike at any time. Parental loss in childhood, motor vehicle accidents, physical violence, sexual assault, military combat experiences, earthquakes, the unexpected loss of a loved one—any sudden, violent disruption—are events that can lead to trauma. People typically replay the experience in their mind over and over and continually think about what happened. The experience leads to changes in brain function marked by a hypersensitivity to threats.