I am almost eight weeks post-op, and glad I have had the surgery. It has taken me what feels like a longish time to recover, but I am truly beginning to feel almost normal. I'm not talking normal pre-surgery, but healthy normal.
Believe it or not, the pain after surgery was actually less than I anticipated. I think in the hospital, the highest I got on the pain scale was a three or a four on a scale of one-to-ten. I was certainly stiff and weak and tired, but I just focused on getting through each day, knowing (from watching my son go through a similar surgery for an unrelated reason) that the next day would probably be better.
The other thing I worried about a lot was nausea post-op. I did have some of that the first day in the hospital, but after about 24 or 36 hours, they had that totally under control.
Ask your doctor in detail about what they will do for nausea and pain post-op. In hind-sight, I wish I had known two things.
First, in the hospital, I didn't understand that the painkillers they were offering me were two types. One acted very quickly, in two or three minutes, but wore off in about an hour or maybe even less. The other took almost 30 minutes to kick in, but lasted for four to six hours. I didn't get it. So, after taking the fast acting one, I'd be trying to gut it out, wondering why I was back in (a little bit of) pain again. So, figure out how long it is supposed to last, or have a spouse or partner or friend keep track of that with and for you.
Second, out of the hospital, I didn't really understand how important the muscle relaxants would be. I didn't feel that stiff, so thought I didn't need any! Wrong. I developed a monster headache about ten days post-op. After trying to treat it with just pain meds, I called the NS office. They helped me understand that for me at least, I still needed round-the-clock muscle relaxants and an anti-inflammatory to deal with the tension--the cause of the nasty headaches post-op. (I am almost off these drugs now, but not quite.)
It was also really tough for me to read my body, and know when I needed them. If I taper my dose, I feel fine for a few days, and then around day four, I would get headaches creeping back. Sadly, it took another four days at the higher dose to get the (mild) headaches back under control.
I consider myself a really lucky Chiari patient. I had very mild symptoms at the time my MRI revealed the Chiari, only noticing tingling and numbness in my left hand because the doctors asked about it. I opted for surgery, though, because a test called an EMG told us that my syrinx had been damaging the nerves on the left side of my body for at least five years. I had just been coping with it, however, not really noticing.
I hope that by having surgery now, I am preventing further damage. I was SO ready for surgery! During the three months between diagnosis and surgery, my health degraded noticeably. I was getting dizzy prior to surgery, and often refused to drive myself because I didn't feel right.
At any rate, I think fear is normal. I wish I could say, "Don't worry. There is nothing to be afraid of." I can't, because this is serious stuff. But if you trust your surgeon, you are doing a good thing for yourself. He (she?) is there to take care of you.
Keep us posted. We are all hear to listen, to help you think through things, to help you cope.
It sounds like you have a lot to gain. From what you describe, this is something you really are right to try.
Our thoughts are with you.