What is the most painful arthritis?

The most painful type of arthritis is generally considered to be gout. Gout is a form of inflammatory arthritis that occurs when uric acid crystals accumulate in the joints, causing sudden and severe pain, swelling, and redness. It commonly affects the big toe, but can also affect other joints such as the ankles, knees, elbows, and wrists. Gout attacks can be extremely painful and can last several days or even weeks.