Hi Mom2Pets
Welcome to NT. Sorry to hear of your long struggle with the pain from CRPS.
Regarding LDN - coincidentally I just took my first dose of LDN last night - unfortunately I'm in a different country to you - but it is also off-label here. I had to go to an Integrative Medical Doctor to get a prescription and then have it made up by a compounding pharmacy.
I'm guessing you've already done the research on how it might help with the pain from CRPS - sorry I can't help with personal experience here as I'm taking it to help with an autoimmune condition.
Here's a link to a report on the use of LDN with CRPS:
Treatment of Complex Regional Pain Syndrome (CRPS) Using Low Dose Naltrexone (LDN)
Another link you may find useful is this:
Low Dose Naltrexone | The Ultimate Resource | by LDNscience(R)
There is a 'Find a Doctor' database under the "PATIENTS" section on the scroll bar. I could only find 4 towns in Pennsylvania: Moon Township, Paxinos, Shamokin & Wayne listed. Maybe one is close enough to you.
Hope this is of some use. Please feel free to ask any questions - I have several other LDN related sites bookmarked and would be happy to send the links