What could cause swelling of the ankles?

Salt in diet: Injury i.E sprain, varicose veins, valve damage in veins, compression of vessels by ankle which can occur in a flatfooted person.

Get checked: Swelling and pain in the ankles can be caused by multiple things such as diet, blood pressure, kidney function, circulation, nerves, injury, previous surgery...Basically many things. You need to see your primary doctor and jot down more info about when do you notice the swelling, does it every go down, when does it hurt, what is your diet, etc. Get checked.

Many possibilities: Some causes of swelling of the ankles can include systemic problems such as hypertension, gout, and problems with the kidneys and localized issues such as arthritis, infection, lymphatic obstruction, blood clots, varicose veins, trauma (fracture, sprain, and tendonitis) and side effects to medication. Have it evaluated by a professional and get the appropriate treatment.