ACCUPUNCTURE SERIES: Mechanism Of Pain Relief Through Dry Needling - DIANA PINTO

Pain, one of man's most worrisome afflictions, is also one of neurobiology's mostchallenging problems. Mount castle (1974) mentioned that, "Pain is that sensoryexperience evoked by stimuli that injure or threaten to destroy tissue, definedintrospectively by every man as that which hurts."Electrical stimulation of man's peripheral nerves has revealed the involvement of two afferent fiber groups subserving pain. Activity in fine myelinated fibers of the A delta pain group evoke sharp, pricking pain, whereas activity in slow unmyelinated C fibers evoke a burning sensation. In response to single electrical shocks, the A delta pain is more severe than C-fiber pain. But C-fiber pain is more severe when the stimulation is repetitive. This observation shows that C-fiber input summates. Strong C-fiber pain therefore underlies chronic suffering. Results obtained from recordings on peripheral nerves in man have revealed that 100 percent of the unmyelinated C fibers respond to noxious stimuli in man [1]. These fibers are involved in Melzack and Wall’s gate control theory of pain, which in turn helps us understand how Dry needling works.

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