Understanding how pain works is often not easy. On this page you will find two very useful videos, both with the possibility of activating the Italian subtitles, which I recommend you watch.
The first video is titled: "Tame the Beast - It's time to rethink persistent pain."
It was produced by prof. Lorimer Moseley, one of the best known neuroscientists involved in persistent pain research.
The second video that I propose is: "The mysterious science of pain" by Joshua W. Pate, a research physiotherapist who deals with the science of pain, in particular the children's beliefs about pain.
He should have managed to explain well which biological and psychological factors influence our experience of pain and the functioning of our nervous system.