Really random... For the past couple of months one particular joint of my finger has gotten progressively swollen and stiff, especially in the morning. I can't make a fist or grip anything between my thumb and finger when I wake up. The joint is visibly swollen. My shoulder, elbow and wrist are also very achey and I seem to be losing strength in my arm. I have to think about moving my arm instead of just moving it, iykwim? It does seem generally worse when I sleep on the side of my affected arm. My other arm/hand is totally fine (thankfully as my good side is my dominant hand).
I haven't injured myself. There is no obvious reason for my symptoms. It has just happened out of the blue. I have booked a GP appointment for a week's time.