When something hurts, pain signal is generated from that place, it then travels to the spine eventually ending up in the brain. It is not a straightforward journey however, and there are numerous factors that will impact on the final sensation of pain.
Sensitisation: http://www.2will.co.nz/sensitisation-explained/
2will physiotherapy & pain management clinic: http://www.2will.co.nz
Pain Clinical Education Blog: http://www.2will.co.nz/clinical-educa…
The Pain Pathway diagram courtesy of Canadian Pain Society: http://www.canadianpainsociety.ca/
https://www.youtube.com/watch?v=JK46PB6229I