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First Aid FAQ
The term "shock" can be used to describe the emotional and physical reaction to a stressful or traumatic event. People who witness a very stressful or life-threatening situation can become "dazed," "at a loss for words," or temporarily incapacitated.
Medically speaking, however, "shock" means the physiological result of the body tissues not receiving enough oxygen for them to function on the cellular level. Shock is an emergency medical condition that can rapidly lead to death. Infections, trauma, massive bleeding, and heart attacks are some of the common medical problems leading to "shock."