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Related Concept Videos

Analgesia and Pain Management01:25

Analgesia and Pain Management

Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
Pain01:20

Pain

Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...
Nociception01:44

Nociception

Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain. Thus, pain helps the...
Local Anesthetics: Differential Sensitivity of Nerve Fibers01:24

Local Anesthetics: Differential Sensitivity of Nerve Fibers

Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...

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Related Experiment Video

Updated: Jun 26, 2026

A Protocol of Manual Tests to Measure Sensation and Pain in Humans
07:28

A Protocol of Manual Tests to Measure Sensation and Pain in Humans

Published on: December 19, 2016

Individual differences in pain sensitivity: measurement, causation, and consequences.

Christopher S Nielsen1, Roland Staud, Donald D Price

  • 1Department of Psychosomatics and Health Behavior, Division of Mental Health, Norwegian Institute of Public Health, Oslo, Norway.

The Journal of Pain
|February 3, 2009
PubMed
Summary

Individual differences in pain sensitivity significantly impact diagnosis, treatment, and clinical trials. Assessing pain sensitivity is crucial for preventing and managing acute and chronic pain conditions.

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Last Updated: Jun 26, 2026

A Protocol of Manual Tests to Measure Sensation and Pain in Humans
07:28

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Published on: December 19, 2016

Dynamic Quantitative Sensory Testing to Characterize Central Pain Processing
09:16

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Published on: February 16, 2017

Determining Pain Detection and Tolerance Thresholds Using an Integrated, Multi-Modal Pain Task Battery
09:38

Determining Pain Detection and Tolerance Thresholds Using an Integrated, Multi-Modal Pain Task Battery

Published on: April 14, 2016

Area of Science:

  • Pain research
  • Genetics and environment in pain perception
  • Clinical pain management

Background:

  • Significant variability exists in pain perception among individuals with the same condition.
  • Individual differences in pain sensitivity are a major contributor to this variability.
  • Pain sensitivity influences diagnosis, treatment efficacy, and clinical trial outcomes.

Purpose of the Study:

  • To explore the role of individual differences in pain sensitivity.
  • To understand the genetic and environmental factors influencing pain perception.
  • To evaluate the clinical relevance of pain sensitivity assessment.

Main Methods:

  • Utilizing well-controlled experimental pain stimuli to estimate pain sensitivity.
  • Analyzing genetic and environmental influences across different pain modalities (e.g., cold pressor, heat pain).
  • Correlating pain sensitivity measures with clinical outcomes like postoperative pain and risk for chronic pain.

Main Results:

  • Pain sensitivity exhibits substantial heritability and significant environmental influences.
  • Genetic and environmental factors affecting pain sensitivity are modality-specific.
  • Pain sensitivity measures predict acute postoperative pain and may indicate future chronic pain risk.

Conclusions:

  • Individual differences in pain sensitivity complicate clinical pain management and research.
  • Assessing pain sensitivity is vital for accurate diagnosis, effective treatment, and reliable clinical trials.
  • Pain sensitivity assessment holds potential for the prevention and management of both acute and chronic pain.