What Causes Severe Pain In The Finger Joints Radiating To The Wrist?

For a little while now, I have been having very bad pain in my finger joints, which has also started to spread down to my wrists more than a few times a day. I would describe the pain as a stiff feeling, but also just very hurtful in general. I would also like to note that I have had a very terrible cramp in one of my hands- on the connective finger joint, that lasted around 40 minutes straight, where I could not clench or stretch my fingers out, and at some points; could not move it at all. It was extremely painful, and my wrist was also in a bit of pain at the time too. Now my finger joints seem to be aching and hurting quite a bit all the time, along with my wrists- instead of how it used to only be small bursts of pain on an occasion.