I have been diagnosed with WMSN, I have had it for about 15 years but was only diagnosed in the last year. Nice to find a Neuro that knows what they are talking about.
Generally I manage/tolerate it but I have been on Gabapentin for another condition so I think that masks it. Certainly at the end of the day when the Gabapentin has worn off a second dose does dampen it down pretty quickly. I also take a low dose of Nortriptyline but I'm not sure if that helps. Tramadol I have also found quite useful in a flare when taken in conjunction with Gabapentin. I also take a vitamin B tablet daily.
All of these except Vit B have side effects though not severe and your body will adjust so take it easy and give it time, build up slowly.
Best of luck
Frank