Swollen feet can be caused by a variety of factors, including prolonged standing or sitting, pregnancy, being overweight, and an increase in age. Other common causes of swollen feet include:

• Blood clot: A blood clot in the leg can cause swelling.
• Infection: An infection in the leg, ankle, or foot can cause swelling.
• Venous insufficiency: This is a condition in which blood inadequately moves up the veins from the legs and feet up to the heart. When the valves in the veins become damaged or weakened, the blood leaks back down the vessels and fluid is retained in the soft tissue of the lower legs, especially the ankles and feet.
• Injury or surgery: Injury or surgery involving the leg, ankle, or foot can cause swelling.
• Heart, kidney, or liver failure: Swollen legs may be a sign of heart, kidney, or liver failure. In these conditions, there is too much fluid in the body, and it collects in the legs.
• Certain medications: Some medications, such as antidepressants and calcium-channel blockers to treat high blood pressure, can cause swelling.

Swelling in the ankles, feet, or legs often goes away on its own, but there are some things you can try to help alleviate it. These include:

• Raising your legs or the swollen area on a chair or pillows when you can.
• Getting some gentle exercise, like walking, to improve your blood flow.
• Wearing wide, comfortable shoes with a low heel and soft sole.
• Washing, drying, and moisturizing your feet to avoid infections.

If the swelling persists or gets worse after treating it at home for a few days, its important to see a doctor. Urgent medical attention is required if there is sudden swelling in just one leg, the swollen area is red or feels hot to the touch, or there is shortness of breath or difficulty breathing.