yeah it really does sound like arthritis. I would see if your doc can prescribe something for you. Knee pain is the worst, I hope you get to feeling better soon!
oops I see that you said thumb now! Silly me I kept thinking knee! Either way it could be arthritis or purhaphs a old sports injury?
someone mentioned something called trigger finger? and it does sound a bit like that. would i get arthiritus in just 1 thumb?
turns out my tendon is damaged and the nodule that sits on it has moved, im to have surgery next week. Scary stuff
thanks, am pretty scared though