What are the most obvious signs of shock?

The most obvious signs of shock include:

* Cool, pale, or clammy skin. This is due to decreased blood flow to the skin.

* Rapid heart rate. This is the body's attempt to compensate for the decreased blood flow by pumping more blood.

* Rapid breathing. This is the body's attempt to get more oxygen into the blood.

* Confusion or disorientation. This is due to decreased blood flow to the brain.

* Nausea or vomiting. This is due to the body's attempt to redirect blood flow to the vital organs.

* Loss of consciousness. This is due to severe decreased blood flow to the brain.

If you see someone exhibiting any of these signs, it is important to call 911 immediately.