Health condition · plain-language reference

Shock

Shock happens when not enough blood and oxygen can get to your organs and tissues. It causes very low blood pressure and may be life-threatening. It often happens along with a serious injury. There are several kinds of shock. Hypovolemic shock happens when you lose a lot of blood or fluids. Causes include internal or external bleeding, dehydration, burns, and severe vomiting and/or diarrhea. Septic shock is caused by infections in the bloodstream. A severe allergic reaction can cause anaphylactic shock . An insect bite or sting might cause it. Cardiogenic shock happens when the heart cannot pump blood effectively. This may happen after a heart attack. Neurogenic shock is caused by damage to the nervous system. Symptoms of shock include: Confusion or lack of alertness Loss of consciousness Sudden and ongoing rapid heartbeat Sweating Pale skin A weak pulse Rapid breathing Decreased or no urine output Cool hands and feet Shock is a life-threatening medical emergency and it is important to get help right away. Treatment of shock depends on the cause. NIH: National Heart, Lung, and Blood Institute

Plain-language summary from MedlinePlus (NIH/NLM) ↗. For informational purposes only — not medical advice.