This chapter discusses vasodilatory shock. The hallmark of vasodilatory shock is hypotension with normal or increased cardiac output. The hyperdynamic circulatory state of vasodilatory shock results in a tachycardia and an increased pulse pressure. Radiological and biochemical investigations can assist with determining the diagnosis of shock. The causes of vasodilatory shock are diverse; they include sepsis, surgical insult, anaphylaxis, and others such as trauma, burns, and pancreatitis. However, sepsis is by far the most common cause of vasodilatory shock. The pathophysiology of vasodilatory shock is also complex and multifactorial. Although still not fully understood, it is widely accepted that it includes activation of several intrinsic vasodilatory pathways and a vascular hyporesponsiveness to vasopressors. Early fluid resuscitation and appropriate antimicrobial therapy are the most crucial treatment interventions in septic shock. Meanwhile, noradrenaline is the first-line vasopressor of choice in septic shock.