+Anaphylaxis is a sudden, severe [Allergy](/wiki/allergy) response, threatening life itself. This rapid, systemic reaction can involve widespread body systems, often requiring immediate [Epinephrine](/wiki/epinephrine) to counteract its perilous effects.
+## See also
+- [Shock](/wiki/shock)
+- [Allergen](/wiki/allergen)
+- [Immune System](/wiki/immune_system)
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