What type of shock is caused by severe allergic reactions?

Anaphylactic shock is specifically caused by severe allergic reactions, often triggered by allergens such as certain foods, medications, or insect stings. This type of shock occurs when the immune system overreacts to an allergen, releasing a flood of chemicals that can cause widespread inflammation, constriction of airways, and a drop in blood pressure. The rapid onset and severity of symptoms require immediate intervention, typically involving the administration of epinephrine.

In contrast, hypovolemic shock is associated with significant blood or fluid loss, cardiogenic shock results from the heart's inability to pump effectively, and neurogenic shock is caused by damage to the nervous system, leading to a loss of vascular tone and insufficient blood flow. Each of these types of shock has distinct causes and mechanisms that differentiate them from anaphylactic shock, highlighting the critical importance of recognizing and responding appropriately to severe allergic reactions.