When the painful stimuli arise in visceral receptors the brain is unable to distinguish visceral signals from the more common signals arise from somatic receptors. As result it interprets the pain as coming from the somatic regions rather than the viscera. can we make the pain to be relieved by injection local analgesic agent in the site of referred pain, even though the source of pain from the viscera is intact?
Pain signals transmitted from the periphery as well as visceral signals are integrated in the spinal cord (including the supraspinal centers). As long as the visceral pain signal persists, the central nervous system will continue to be activated and still the brain experience pain.
thank you Jie Yu for good explanation. still the question is does it reduce the pain in some extent? or the severity of the pain will be same as it was before.
Locally injected Lidocaine can reduce pain. However, I have never used it at the viscera level. A paper:
Perioperative systemic lidocaine for postoperative analgesia and recovery after abdominal surgery: a meta-analysis of randomized controlled trials.
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