Small fiber nerves regenerate. Long fiber nerves do not.
The frustrating thing you are taught in anatomy and physiology that nerves don’t regenerate period. I have read an article about marijuana and nerve regeneration out of Israel.
This is not easy reading.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8541184/
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Had to break up article otherwise the two will not pull up
https://journals.lww.com/nrronline/fulltext/2024/04000/cannabinoids_and_endocannabinoids_as_therapeutics.22.aspx.