I had ETS surgery (cutting of T2) about 10 years ago for facial HH. The surgery worked very well and I had virtually no immediate complications from the surgery (infection, nerve damage, etc). I now experience severe CS on my trunk (worse on my back) that is pretty debilitating. At this point I'm considering reversal surgery (and am very open to any insight).
I had the surgery done in San Francisco, CA by a now-retired thoracic surgeon (I live in the Portland, OR area). He did mention CS as a possible side effect but didn't present it as a huge risk. To be fair, I was so desperate that I probably wouldn't have listened anyway. That's why it is incumbent on doctors to save us from ourselves. Any surgeon that performs invasive, irreversible surgery to treat conditions where patients are despondent and vulnerable should overemphaasize the risks and minimize the possible benefits (under-promise and over-deliver).
The surgery was uneventful and recovery was quick and I had no immediate complications. In terms of efficacy, the surgery was tremendously successful. My facial HH was immediately and completely resolved, as was my hand-sweating (which wasn't a huge problem, but they are 100% dry now). I still experience gustatory sweating occasionally with very rich or spicy foods but it's not a problem at all. I also still experience blushing but I believe it may be better than it was.
That's the good part. Like many others, I now have severe CS on my trunk (worse on my back). I don't have any of the other dry scalp or pain syndromes that others have though, so maybe I'm one of the lucky ones.
Interestingly, having no moisture on your hands does cause some problems. It's hard to count out money (seriously) or pick things up and it's almost impossible to deal cards (and I used to be a BJ dealer in Las Vegas in college!). It's also hard to play basketball as you really need a little moisture on your hands to properly grip and put spin on the ball.
I've tried hyoscyamine and Robinul and find that Robinul seems to work better but really only reduces the CS about 20-30% most of the time. Often, it doesn't matter what I take.
http://www.no-ets.com/forums/viewtopic.php?p=1489&sid=6ff9da7866e646365a7b8ba9bfcbd845
