<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello. I generally feel that my hands are slightly swollen and recently, my left thumb top joint won t bend without a lot of pain and it pops when returning to its prior position. The base of the thumb joint is also so but can move it about I type for my job in an office.  <response>: Dear patient thank you for your question. Here are the differential diagnosis for your condition1 Rheumatoid arthritis: It commonly presents with hand swelling and affects joints. Get a complete blood work done with RA factor and anti CCCP. An associated Carpal tunnel syn Chat Doctor. Splitting of the sheath works wonders3 Osteoarthritis: If u notice nodules on the thumb joint then this diagnosis is as good as confirmed will need an x-ray in all three conditions. For the pain and swelling I suggest Ibuprofen 800 mg twice daily. Please do discuss the above-mentioned with your doctor. I hope this helped 