Ankle pain and a little swelling may be caused by ankle sprain, ankle osteoarthritis, gout and other reasons. 1. Ankle sprain: ankle sprain often has ligament and soft tissue damage around the ankle joint, causing pain, swelling, subcutaneous ecchymosis, and the pain will be aggravated by moving the ankle joint. 2. Osteoarthritis of the ankle joint: often occurring in the elderly, when osteoarthritis of the ankle joint occurs, the cartilage degeneration and denaturation occurs, causing pain in the ankle joint area, accompanied by joint effusion, can cause swelling of the ankle joint. 3. Gout: gout patients due to uric acid deposition in the ankle joint area, resulting in acute gouty ankle arthritis, inflammation stimulation caused by ankle joint swelling and pain. There are many other reasons for ankle pain and swelling, you should go to the hospital in a timely manner to improve the examination, clear the cause of the disease in time to carry out targeted treatment.