Stress-Induced Analgesia: How Fear Blocks Physical Pain
Introduction and Definitional Framework Stress-Induced Analgesia (SIA) is a profound psychophysiological phenomenon characterized by a significant reduction or complete suppression of pain perception in response to exposure to intensely stressful or traumatic stimuli. This mechanism serves as a critical, evolutionarily conserved survival strategy, allowing an organism—whether human or animal—to temporarily ignore debilitating injury or pain […]