Swollen ankles, also known as edema, are brought about by the buildup of fluid around the ankles, feet and legs. Most of the time, swollen ankles are temporary and not a cause for concern.

Often, swollen ankles due to flying are harmless and go away on their own. In rare cases, however, ankle swelling may be a sign of deeper vein thrombosis (DVT), which is more serious and requires ...