Swollen feet and ankles can be uncomfortable, frustrating, and sometimes a little alarming. You might notice your shoes feel tighter, your socks leave deep marks, or your ankles look puffier than usual by the end of the day.

Sometimes swelling can happen after standing for a long time, sitting during travel, eating salty foods, or being pregnant. These instances are often temporary and not serious. Other times, swelling can be a sign that something in your body needs attention. The key is paying attention to when it happens, whether it affects one or both legs, and what other symptoms come with it.

What Causes Swelling in Feet and Ankles?

Swelling happens when extra fluid builds up in bodily tissues. This is sometimes called edema. It often shows up in the lower legs, ankles, and feet because gravity pulls fluid downward, especially when you are on your feet for long periods of time.

Common causes include:

  • Standing or sitting for a long time
  • Hot weather
  • Pregnancy
  • Eating a lot of salty foods
  • Certain medications
  • Injury, such as a sprain
  • Varicose veins or circulation changes
  • Infections
  • Heart, kidney, or liver conditions
  • Blood clots

Some causes are mild and improve with simple changes. Others need medical care, especially if the swelling is new, painful, or only on one side.

Swelling During Pregnancy

Mild swelling in the feet and ankles is common during pregnancy, especially during the later trimesters. Your body has more fluid, and your growing uterus can put pressure on blood vessels, which makes it harder for fluid to move back up from your legs.

That said, sudden or severe swelling during pregnancy should not be ignored. Call your healthcare provider right away if swelling comes on quickly or is paired with headaches, vision changes, shortness of breath, chest pain, or pain in the upper belly. These symptoms can be signs of a serious pregnancy-related condition and need prompt medical attention.

Swollen Ankle WFMC Health

Swelling From Injury

If one ankle or foot swells after a twist, fall, or bump, the swelling could be from a sprain, strain, or fracture. You may also notice bruising, tenderness, or trouble walking.

For mild injuries, use the “RICE” method: rest, ice, compression, and elevation. Seek care if you can’t put weight on the injured foot, the pain is severe, the swelling is significant, or the area looks deformed.

Medication-Related Swelling

Some medications can cause swelling in the feet and ankles. This may include certain blood pressure medications, hormones, steroids, anti-inflammatory medications, or diabetes medications.

Do not stop taking a prescribed medication without consulting your provider. Contact your provider first and explain your symptoms, and they can help determine whether your medication is involved and if changes are needed.

When Swelling Could Be More Serious

Swelling in both legs can sometimes be related to how well the heart, kidneys, liver, or veins are working. Swelling in just one leg, especially with pain, warmth, redness, or tenderness, can sometimes be related to a blood clot.

Get medical care right away if you experience swelling along with:

  • Chest pain
  • Trouble breathing
  • Coughing blood
  • Fainting or severe dizziness
  • One-sided leg swelling with pain, redness, or warmth
  • Sudden swelling during pregnancy
  • Swelling with fever or spreading redness

What You Can Try at Home

For mild swelling at the end of the day that seems related to standing, sitting, heat, or travel, small changes may help.

Try to elevate your feet while resting, move your legs and ankles during long periods of sitting, and take short walking breaks when you can. It can also help to drink water regularly and limit very salty foods.

Sometimes, a change in footwear can be helpful. Make sure you’re wearing comfortable shoes and ask your provider about compression socks.

When to Make an Appointment

Make an appointment if swelling is new, keeps coming back, gets worse, or does not improve with home care. You should also be seen by a medical professional if swelling is painful, affects only one side, comes with skin changes, or makes it harder to walk.

Your provider will likely ask about your symptoms, medications, pregnancy status, health history, and daily habits. They may also check your blood pressure, examine your legs and feet, or recommend tests based on what they find.

Listen to What Your Body Is Telling You

Swollen feet and ankles are not uncommon, but it doesn’t mean you should ignore them. Getting evaluated can help you feel more confident about what is going on and how you can address it.

At WFMC Health, we are here to help you care for yourself and your family with practical, welcoming support. If swelling is bothering you or feels unusual, reaching out is a smart next step.

This article is meant for informational purposes only. If you have questions or would like further information, make an appointment with your primary care provider.

This blog post was first published on WFMCHealth.org.