Around 6 months ago, my left middle finger’s middle joint and bottom joint around the knuckle areas got painful, particularly in the morning. When I tried to flex my middle
finger, I can feel the
joint is bouncing back and fore like a toggle switch.
In particular, my middle finger cannot fold back to touch my palm, when I am trying to hold a fist. When I try, it is painful and unable to curl back much.
My doctor has X ray and blood test for Rheumatoid Arthritis. Everything tested normal.