Shock is a temporary lack of supply of blood to the brain and other vital organs. It is caused by upsetting or good news and events such as electric shock, excessive injury, and illness.
Causes
Severe bleeding, either internal or external.
Loss of plasma in burns or crash injuries.
Heart failure as in acute heart attacks.
Loss of body fluid from recurrent vomiting or severe diarrhoea.
Acute abdominal emergencies, example perforation of stomach or ruptured appendix.