What are the three types of distributive shock?

Distributive shock is characterized by a relative hypovolemia due to the widespread vasodilation that leads to inadequate perfusion of tissues and organs despite normal or increased blood volume. The three primary types of distributive shock include septic shock, neurogenic shock, and anaphylactic shock.

Septic shock occurs as a result of severe infection that triggers systemic inflammation, leading to vasodilation and increased capillary permeability. Neurogenic shock is caused by a loss of sympathetic tone, often due to spinal cord injury, resulting in vasodilation and decreased systemic vascular resistance. Anaphylactic shock is an acute, severe allergic reaction that also causes extensive vasodilation and increased vascular permeability due to the release of histamine and other mediators.

The correct choice highlights these three significant types of distributive shock, emphasizing the role of severe infection, loss of sympathetic tone, and immediate hypersensitivity reactions in the pathophysiology of this form of shock.