So when you have a persistent injury,
TaylorMade R15 Black Driver, the C fiber is just constantly overcoming the inhibition it normally receives. This would explain why you have a constant amount of pain,
Titleist 913 Drivers, and then any further degree of pain would be caused by the combination of the inflammatory response with a noxious stimulus. A lot of the machinery required for synapse maintenance is present at the synapse itself (there be mitochondrias and ion pumps all up in there).