Mechanical compression

Chemical and mechanical compression of nerve root inflammation is thought to be the source of neuropathic pain 1).

1)
Weber H. The natural history of disc herniation and the influence of intervention. Spine (Phila Pa 1976). 1994 Oct 1;19(19):2234-8; discussion 2233. doi: 10.1097/00007632-199410000-00022. PMID: 7809761.