I was a little over a year into Anastrozole when several side effects kicked in. Noticed slight hints of what I thought mIght be carpel syndrome. Then woke up one night with hands/fingers frozen like a claw in pain. Just kept walking around and it subsided a little but not enough. I researched and found it was nerves being blocked and recommended laying on your back with your arms at your side. It worked for me and now if i get that feeling I go to that solution. I have stopped taking Anastrozole for 3 months at my oncologist suggestion. Not sure what thoughts will be offered at that time. I hope you get control of this side effect you are dealing with ❤️