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. Author manuscript; available in PMC: 2014 Jun 1.
Published in final edited form as: Expert Opin Emerg Drugs. 2013 May 21;18(2):207–217. doi: 10.1517/14728214.2013.802305

Figure 1.

Figure 1

The nerve–axon reflex (also known as Lewis triple-flare response). Injury or inflammation stimulate the C-nociceptive fibers and cause retrograde stimulation of the adjacent fibers that release active vasodilators (such as histamine, SP and CGRP). This results finally in hyperemic reaction during stress.