Red, swollen and painful ankles can be caused by trauma, ankle sprains and osteoarthritis. You should consult a doctor in time to find out the cause of the disease. 1. Trauma: It may be caused by direct violence injury, such as falling from height, heavy objects, going up and down the stairs, playing basketball, playing soccer sprain, etc., which can lead to ankle redness, swelling and pain symptoms. 2. Ankle sprain: when the ankle joint exceeds its normal range of motion, it will lead to excessive strain or tear around the ankle, causing damage to the soft tissues, tendons, ligaments, and joint capsule around the joint, resulting in redness, swelling, and pain in the ankle. 3. Osteoarthritis: It is generally related to the patient’s age, obesity, trauma, inflammation and genetic factors, and is the result of a combination of factors. Red, swollen and painful ankles can be caused by cold and exertion. Red, swollen and painful ankles, there may be other reasons, you should consult a doctor in time, ask the doctor to clarify the specific causes, and if necessary, carry out the appropriate treatment.