What should you know about swelling in left ankle only?

A recent twist can injure ankle ligaments, while a fracture may cause marked pain, bruising or difficulty bearing weight. Ankle osteoarthritis can cause recurring swelling and stiffness, particularly after activity. Gout may cause a rapidly painful, hot and red joint. Swelling that is new without an obvious injury needs an examination because circulation, infection and other causes can also affect one leg. Compare warmth, colour and movement with the other ankle.

Limit walking that increases pain, elevate the ankle, and use a wrapped cool pack for short periods after a recent injury. Supportive footwear may feel more comfortable, but do not tightly bind a swollen ankle or sleep in a restrictive wrap. Move the foot gently if movement is comfortable. Arrange assessment if you cannot walk normally, swelling is not easing, or the ankle repeatedly becomes swollen.

Get urgent help for a deformed ankle, severe pain, inability to bear weight, rapidly increasing swelling, or a foot that becomes cold, pale or blue. A red hot ankle with fever needs prompt review. Emergency help is needed for one-sided leg swelling with chest pain, sudden breathlessness, fainting or coughing blood. Do not wait for ankle swelling to settle when these symptoms occur.

Ask whether you need an X-ray or other assessment, how much weight you can place on the ankle, and which exercises are suitable. Report any twist, new medicine, fever, calf symptoms, skin change, numbness or previous ankle problems.