Pain wind-up

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Pain wind-up is the increase in pain intensity over time when a given stimulus is delivered repeatedly above a critical rate. It is caused by repeated stimulation of group C peripheral nerve fibers, leading to progressively increasing electrical response in the corresponding spinal cord (posterior horn) neurons due to priming of the NMDA receptor based response. [1] [2] It describes an exponentially progressive increase in firing of wide dynamic range neuron with repeated stimulation.

References

  1. ↑ Feng Xu; Tianjian Lu (29 May 2011). Introduction to Skin Biothermomechanics and Thermal Pain. Springer. p. 347. ISBN   978-3-642-13201-8 . Retrieved 25 April 2012.
  2. ↑ Pitcher and Henry (2000). Eur. J. Neurosci., 12:2006–2020.
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