Stress is simply a reaction to a stimulus that disturbs our physical or mental equilibrium. In other words, it's an omnipresent part of life. A stressful event can trigger the "fight-or-flight" response, causing hormones such as adrenalin and cortisol to surge through the body A little bit of stress is exciting—it keeps us active and alert. But chronic stress can have detrimental effects on health. You may not be able to control the stressors in your world, but you can alter your reaction to them.Acute stress disorder develops within one month after an individual experiences or sees an event involving a threat or actual death, serious injury, or physical violation to the individual or others, and responds to this event with strong feelings of fear, helplessness or horror.
Post-Traumatic Stress Disorder (PTSD) is an anxiety disorder that may develop after exposure to a terrifying event or ordeal in which severe physical harm occurred or was threatened. Traumatic events that may trigger PTSD include violent personal assaults, natural or unnatural disasters, accidents, or military combat. Anyone who has gone through a life-threatening event can develop PTSD including military troops who served in wars; rescue workers for catastrophes like the 2001 terrorist attacks on New York City and Washington, D.C.; survivors of the Oklahoma City bombing; survivors of accidents, rape, physical or sexual abuse, and other crimes; immigrants fleeing violence in their countries; survivors of earthquakes, floods, and hurricanes; and those who witness traumatic events. Family members of victims can develop the disorder as well.