Encyclopedia of Pain

2007 Edition

Analgesia

Reference work entry
DOI: https://doi.org/10.1007/978-3-540-29805-2_195

Definition

A reduced or absent sense of pain response to stimulation that would normally be painful. Can be seen as a decrease in nociceptive threshold or a decrease in pain perception. It can also be described as a situation in which the intensity of the stimulus required to evoke an escape or avoidance response is increased above normal, or the time required for an animal to respond to a noxious stimulus is increased above normal. Analgesia is measured in the uninjured stated.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007