Ankle Sprain Symptoms

When an ankle is injured with a sprain, tissue injury and the resulting inflammation occur. Blood vessels become "leaky" and allow fluid to ooze into the soft tissue surrounding the joint. White blood cells responsible for inflammation migrate to the area, and blood flow increases as well. Typical changes that happen with inflammation include the following:

• Swelling because of increased fluid in the tissue is sometimes severe.

• Pain because the nerves are more sensitive: The joint hurts and may throb. The pain can worsen when the sore area is pressed, or the foot moves in certain directions (depending upon which ligament is involved) and during walking or standing.

• Redness and warmth caused by increased blood flow to the area.