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Overview

Pain occurs as a result of a physiological (i.e., related to body function) series of events in the body. Pain receptors are bare nerve endings that are widely distributed throughout the body in the skin, mucous membranes, and tissue (e.g., bone, muscle). When pain receptors are triggered by mechanical, chemical, or thermal stimuli, the pain signal is transmitted through the nerves to the spinal cord and then to the brain.

Pain is subjective—not perceived by anyone but the pa...Read the full article