A red, swollen and warm ankle

This combination indicates active inflammation but does not identify the cause. Infection, gout, a recent injury and other joint or skin problems can overlap in appearance and need different treatment.

Inflamed tissue receives increased blood flow and releases fluid, producing warmth, colour change and swelling. Gout can present with a rapidly painful, warm, swollen joint. Infection may also cause spreading redness, tenderness, fever or feeling unwell. After a twist or impact, a sprain or fracture may produce warmth and swelling around the injured tissues.

The onset, recent wounds or procedures, fever, exact pain location and ability to walk help a clinician separate these possibilities. Do not use redness alone to decide which condition is present.

Contact a medical service for advice and assessment rather than waiting for the colour or heat to disappear. Rest the ankle, elevate it and avoid activity that increases pain. Remove tight footwear or jewellery near the swelling, but do not massage a very tender, hot area.

Note when symptoms started, whether redness is spreading, and whether there was an injury, bite, cut or recent skin problem. Bring a list of medicines and relevant medical conditions. Do not start leftover antibiotics or another person's medication.

Seek same-day medical assessment for a newly red, hot and swollen ankle, especially when pain is substantial or movement is limited. Go for immediate care if redness spreads quickly, fever or shaking chills develop, you feel faint or confused, or there is pus, a deep wound or red streaking.

After an injury, deformity, inability to take steps, severe pain, numbness, or a pale, blue or cold foot also requires urgent evaluation. These warning signs determine urgency regardless of the suspected cause.

Ask whether the inflammation appears centred in the skin, joint or injured tissue; whether tests or imaging are needed; and what treatment should begin now. Confirm which changes mean you should seek emergency help and when the ankle should be reassessed.