At some point in our lives, most people experience stress, fear, anxiety or all of these. Although those are normal reactions in the face of life threatening situations, some people experience them more frequently than others do. Most people will experience terror in the event of an assault, violent situation, motor vehicle collision or another similar situation, but others experience it when dealing with their normal day-to-day activities. This condition is known as panic disorder and manifests in panic attacks. These episodes are not life threatening, though they may be experienced as such by the sufferer.