@gregoria I think your Internist may not be well informed about LDN as it is known to be effective for inflammatory diseases.
It doesn’t help numbness, but it does have the potential for pain. I have severe axonal sensor motor neuropathy and arthritis and LDN is the only thing I take for pain. Here’s more info about its use for inflammation and neuropathy. It doesn’t work for everyone, but when it does it’s a godsend. Given that it’s inexpensive with no significant side effects for most people it’s worth a try.

Best wishes!
https://ldnresearchtrust.org/low-dose-naltrexone-pain-management-and-inflammatory-disorders