RSD spreading isn't rare at all. You only have to look around to see that. LOLOL

RSD spreads on it's own a lot without any further injury. The pain signals sent from the nerve endings to the brain and back again travel through our spinal cord. This is the same route that causes it to branch out and spread to other parts. I'm still baffled as to why so many doctors think you have to have another injury for it to spread. No, that is a myth. There's doesn't have to be an injury, it'll spread all by itself just fine. lolol I have articles about rsd and spread that I'll dig up for you. :-)

I don't think the blocks had anything to do with spread. After a certain amount of time, it's different for everyone, it will begin to branch out. The nervous system starts to bounce those pain signals out to another region, so to speak. There are changes to the brain and nerve endings after having rsd for just a few months. There's really no surprise that it would then spread.

I don't know about doing another emg. If the first one was normal and you have no nerve damage, then making you do another one serves no purpose at all, except to aggravate the nerves even more. Another bone scan is a good idea though. Sometimes in the early stage of spread or even the beginning of rsd, it can show positive changes that can be dx'd as rsd. My 2 bone scans at 5 months and 1 yr 5 months were normal. The ones I've seen that had a bone scan in the first 3 months or had one as soon as spread occurred, had the bone scan turn up "positive" for rsd. I can only figure the reason for this is because of the beginning stage when the limb is changing in blood flow, circulation and such that it has an effect on the bone that goes away, sometimes, after the initial phase. Of course everyone is different. That seems to be a mantra for rsd. LOL

Hope this helps you out a bit. Have you gotten any pain relief from the blocks? Getting no relief means the pain is sip and getting more blocks aren't going to help. Blocks only help pain that is smp.

Hugs,

Karen