I may have some neck issues in tandem with the a S however both of my hands go numb just my thumb four finger and middle finger sometimes go numb or opposite my ring finger and my pinky finger and then I also get like a numbness in my left thigh right in the center I don’t know I think that it’s all probably from inflammation cutting off nerves.

I haven't been to a doctor for it but, I have asked other people who spondylitis and they said it has happened to them as well

Yes

It could be carpel tunnel, tendentis or arthritis..

Yes it has to me too