“What are the potential causes of swelling in my ankles?”

It may causes by you use to walk long way.

Swelling of the ankles is caused by excessive fluid in the lower legs. This can be an early clue about heart trouble, and should be brought to the attention of your Medical doctor. Other contributing conditions can be diabetes or obstruction of veins or lymphatic channels. You can help reduce the swelling by elevating the legs above your heart 20 minutes at a time once or twice a day. Don't ignore this, as this may be your body's warning of a serious condition developing. You may just be standing too much every day, in which case putting your feet up the wall may be all you need .

Kidney issues, congested heart failure , viens that aren't working efficiently, pregnancy, infection, go see your primary to be evaluated

Infection, blood clot, foot/ankle injury, heart/kidney/liver disease, lymphadema, and/or pregnancy.

Maybe infection .