1. Physiological factors: due to a long time to keep a position or leg sagging, can lead to lower extremity blood circulation is not smooth, lower extremity venous return is impeded, thus causing swelling, change the posture, move the ankle, can be gradually relieved.
2. Gout: gout patients due to excessive synthesis of uric acid in the body, excretion obstacles, gout stones deposited in the ankle joints, can cause ankle pain, swelling, and in severe cases, ankle joint activities can be limited.
3. Trauma: due to trauma can cause soft tissue injury in the ankle, or even fracture, can appear outer ankle pain, swelling, subcutaneous bruising and restricted movement and other symptoms.
There may be other reasons for the swelling of one side of the external ankle. If the symptoms continue to be unrelieved, it is recommended that the patient go to the hospital in time to complete the relevant examinations, and after clarifying the cause of the disease, the patient will be treated under the guidance of the doctor.