Thanks for sharing this. It seems there may be some benefit of low dose naltrexone in inflammatory and pain disorders based on small studies. While I do not think all the data is in about its efficacy I do think that in some instances it would not be harmful and may provide some benefit over placebo in these difficult conditions.
I'd likely recommend patients see a pain specialist or rheumatologist for consideration as these specialties are likely best equipped to manage this therapy at this early stage.
Please see the following scientific works for more technical information.