Why do different people tolerate the same painful stimulus differently?

The perception of pain is a complex process that integrates sensory input with an individual’s memories, emotions, and cognitive state. Because pain involves both physiological and psychological components, no two individuals experience it in exactly the same way.12

Several factors contribute to these differences:

• Psychological and Emotional Context: The meaning a person assigns to pain significantly influences their response. For example, pain perceived as a sign of survival or relief may be tolerated differently than pain associated with fear or illness. Emotional states like depression and anxiety can lower pain thresholds, while anger, excitement, or emotional relief can temporarily lessen the sensation.21
• Biological and Demographic Factors: Research indicates that pain perception and response vary by gender and ethnicity. Neurochemical differences, such as how individuals respond to opioid drugs, and early-life experiences can lead to molecular-level changes in the nervous system that influence adult pain responses.23
• Cultural and Social Influences: Cultural attitudes often shape how individuals express or tolerate pain. While the initial pain perception threshold is relatively similar across groups, the point at which pain becomes unbearable—the pain tolerance threshold—varies significantly based on social and cultural norms.1