Congrats on finding ways to mediate your nerve pain! I have found that it's essential to "think outside the box" of traditional medicine and find what works best for you!
I have SFN, as well as Erythromelalgia, in my feet and lower legs. No contributing health issues. I tried gabapentin when first diagnosed but couldn't tolerate the side effects. I've been on pregabalin 150mg 2x a day for several years and it has given me some relief. Also on a supplement called Nerve Renew which is a proprietary blend including B vitamins and Alpha Lipoic Acid.
I can't use compression socks because of the EM. Have used DMSO, and 5% lidocaine cream. And CBD tinctures. Pretty much tried everything I can find to date!
This week my dermatologist is going to use laser therapy on my feet and legs to try and alleviate the painful heat & discomfort from the EM. We'll see how that goes!