My wrist feels very stiff. Is it carpal tunnel syndrome? Or is it arthritis?

Lately, I've been studying all day long.
I used to write for long periods to the point where it strained my wrist,ㅠ.

Starting the next day, my wrist suddenly became very stiff...
I found out that there is a high possibility of carpal tunnel syndrome, so I was really worried!

Actually, when I think about going to the hospital, I feel a bit scared, and I hear I might need surgery.
I didn't know what to do..

I'm thinking a lot about the possibility that it might be arthritis.

It's better to go to the hospital as soon as possible, right?