Reduced blood pressure is, in most cases, a major factor in causing shock and is one of its main features.
Shock is made worse by pain and anxiety.
Early Stages Shock is a common accompaniment to severe injury or illness. It may develop in any situation in which blood volume is reduced. In the early stages of shock, the body tries to compensate for the reduced blood volume by constricting the blood vessels in the skin, the soft tissues, and the skeletal muscles. The victim has a feeling of weakness. The victim's pulse will become rapid, but may be too faint to feel at the wrist.