A shock is a sudden and deep drop in blood pressure. This clinical condition can have serious consequences for the vital organs (kidneys, lungs, liver…) There are different kinds of shock: septic shock, which results from a severe infection; hemorrhagic shock, which results from a significant loss of blood; cardiogenic shock, which results from a malfunction of the heart; and anaphylactic (or allergic) shock, which results from a severe allergy.