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Analgesia and Pain Management

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...

Nociception

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.

Pain

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...

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Related Experiment Video

Updated: Jun 25, 2025

Multi-Modal Signals for Analyzing Pain Responses to Thermal and Electrical Stimuli

Multi-Modal Signals for Analyzing Pain Responses to Thermal and Electrical Stimuli

Published on: April 5, 2019

Age-associated changes in multimodal pain perception.

Yongkang Zhi^1,2, Yu Zhang³, Yu Zhang^1,2

¹CAS Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China.

|May 22, 2024

Summary

This summary is machine-generated.

Older adults experience reduced heat pain perception due to age-associated declines in heat sensory functioning. This study investigated age-related changes in pain sensitivity across different nerve fiber types.

Keywords:

ageing heat older people pain pressure somatosensory

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

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

Published on: April 14, 2016

Area of Science:

Neuroscience
Gerontology
Sensory Physiology

Background:

Pain perception varies with stimulus type and nerve fiber involvement (small vs. large fibers).
Neuropathies arise from nerve fiber damage, impacting pain sensitivity.
Limited research exists on how aging affects pain perception across different somatosensory stimuli.

Purpose of the Study:

To investigate age-associated changes in pain perception.
To examine how heat and pressure stimuli differentially affect pain sensitivity in younger and older adults.
To assess age-related differences in pain threshold and discriminability.

Main Methods:

Heat and pressure stimuli were applied to younger and older adults, targeting small and large nerve fibers separately.
Self-reported pain sensitivity, pain threshold, and pain discriminability were measured.
Statistical analyses were used to compare age groups and stimulus types.

Main Results:

Heat pain threshold showed a significant positive correlation with age.
Older adults exhibited increased heat pain thresholds and decreased heat pain discriminability compared to younger adults.
Pressure pain threshold did not show a significant correlation with age.

Conclusions:

An age-associated decline in heat pain perception was observed, indicating potential earlier degradation of heat sensory pathways.
Findings highlight the differential impact of aging on somatosensory processing based on stimulus modality.
This research provides insights for understanding and assessing somatosensory disorders in aging populations to promote healthy sensory function.