When you've been in a major accident that caused trauma, your body could go into a state of shock, which means that not enough blood is circulating through the body. This can lead to oxygen deprivation, heart attack, or even organ damage if left untreated. Here are some injuries that can lead to shock: heavy external or internal bleeding, heart conditions, extreme pain, dehydration, severe burns, spinal injuries, severe allergic reactions, infection, and emotional trauma. Learn more!