Hey I also have syringomyelia, I know kinda how it feels it sucks. Did the say what kind of surgery. I know the one my doctor was talking about is they would insert a tube into the cyst and it would drain into my lung..it's risky though because it deals with the spinal cord..Thankfully my cyst isin't growing so no surgery yet.If it starts growing then I'll have to have it.
Also I don't know if it's just me or I've noticed stress causes me alot of pain and more symptoms..
talk to your doctor see what kinda surgery they're looking into and if the cyst is growing good luck and don't leave it to long if you think it's a new symptom go to a doctor..Because the cyst can get to big where surgery's not even a option. I don't know if this helps at all