Swollen ankles are usually a sign of fluid buildup in the lower legs, and in most cases you can reduce the swelling at home with a few straightforward steps. The first thing to do is elevate your feet above heart level, limit your salt intake, and start moving your ankles to push fluid back toward your heart. But the right approach depends on what’s causing the swelling, and some causes need medical attention.
Reduce Swelling Right Now
The fastest way to bring down ankle swelling is to lie back and prop your feet up above the level of your heart. A stack of pillows on the couch works fine. This lets gravity drain fluid out of your lower legs and back into circulation. Aim to stay elevated for 20 to 30 minutes at a time, and repeat several times throughout the day.
If the swelling followed an injury like a twist or a fall, use the RICE approach: rest, ice, compression, and elevation. Apply an ice pack wrapped in a thin towel (never directly on skin) for 10 to 20 minutes every hour or two. A snug compression bandage or sleeve can also help prevent more fluid from pooling, but it shouldn’t be tight enough to cause numbness or tingling.
Ankle pump exercises are one of the simplest ways to improve circulation in your lower legs. While sitting or lying down, point your toes down and then pull them back toward your shin, alternating every 3 to 4 seconds. A systematic review of the research found that this pace is the most effective frequency for improving blood flow in the lower extremities. You can do these throughout the day, especially during long periods of sitting.
Cut Back on Sodium
Salt makes your body hold onto extra water, and that fluid tends to settle in your ankles and feet. The average American eats well over 3,000 milligrams of sodium a day. If you’re dealing with persistent swelling, bringing that number down to 1,500 to 1,800 milligrams daily can make a noticeable difference. That means cooking more at home, reading nutrition labels, and being cautious with restaurant meals, canned soups, deli meats, and salty snacks. Drinking more water (not less) actually helps your kidneys flush out excess sodium.
Figure Out What’s Causing It
The steps above will help with most mild swelling, but the long-term fix depends on the underlying cause. One of the most useful clues is whether one ankle is swollen or both.
Swelling in just one ankle often points to something local: an injury, an infection, a blood clot in the leg (deep vein thrombosis), or a problem with the veins in that leg not moving blood back efficiently. Acute one-sided swelling with warmth, redness, and tenderness can signal a blood clot or an infection, both of which need prompt evaluation.
Swelling in both ankles is more likely tied to a whole-body issue. The most common cause is chronic venous insufficiency, where the valves in your leg veins weaken and let blood pool. But bilateral swelling can also result from heart failure, kidney problems, liver disease, or low protein levels in the blood. These conditions cause the body to retain fluid system-wide, and gravity pulls it to the lowest point.
Check Your Medications
Several common medications cause ankle swelling as a side effect, and many people don’t realize the connection. Blood pressure medications are frequent culprits, particularly a class called calcium channel blockers. Among these, amlodipine is one of the most widely prescribed and also one of the most likely to cause swelling, because it strongly relaxes the small arteries in your legs, allowing fluid to leak into surrounding tissue.
Pain relievers like ibuprofen and naproxen (NSAIDs) can also cause fluid retention, especially with regular use. Other blood pressure drugs, including beta blockers and certain vasodilators, may contribute as well, particularly at higher doses. If you started a new medication in the weeks before your ankles began swelling, that’s worth mentioning to your prescriber. Don’t stop any medication on your own, but a dose adjustment or switch to an alternative often resolves the problem.
How to Tell if Swelling Is Mild or Serious
You can get a rough sense of severity with a simple test. Press your thumb firmly into the swollen area near your ankle bone for about five seconds, then release. If the skin bounces back immediately and leaves only a shallow dent of about 2 millimeters, that’s grade 1 pitting edema, the mildest form. If the indent is deeper (5 to 6 millimeters) and takes 15 to 60 seconds to fill back in, that’s grade 3. The most severe, grade 4, leaves an 8-millimeter pit that can take two to three minutes to rebound.
Mild pitting that comes and goes with activity, heat, or salty meals is common and usually manageable at home. Persistent or worsening edema, especially grade 3 or 4, suggests something more is going on and warrants a medical evaluation.
Swollen Ankles During Pregnancy
Some ankle swelling during pregnancy is completely normal, especially in the third trimester. Your body carries significantly more blood volume, and the growing uterus puts pressure on veins that return blood from your legs. Swelling that stays in the ankles and improves with elevation is generally not a concern.
What does matter is where and how quickly the swelling appears. Sudden swelling of the hands, face, or arms, or a rapid jump in weight from fluid retention, can be an early sign of preeclampsia. This condition is diagnosed when blood pressure reaches 140/90 or higher and protein shows up in the urine. Many women with mild preeclampsia feel fine, which is why regular prenatal blood pressure checks are so important. Ankle swelling alone doesn’t mean preeclampsia, but ankle swelling combined with headaches, vision changes, or upper abdominal pain calls for an immediate call to your provider.
Warning Signs That Need Urgent Attention
Most swollen ankles aren’t emergencies, but a few combinations of symptoms are. Swelling in one leg along with pain, warmth, and redness in the calf can indicate a deep vein blood clot. That clot can break loose and travel to the lungs, causing a pulmonary embolism. Seek emergency care if you develop sudden shortness of breath, chest pain, a rapid or irregular heartbeat, coughing up blood, or lightheadedness alongside leg swelling. Skin that looks bluish or feels clammy is another red flag.
Swelling in both legs that comes on quickly along with difficulty breathing, especially when lying flat, can signal worsening heart failure. This is also a reason to get evaluated the same day rather than waiting it out.
Lifestyle Habits That Help Long-Term
If your ankles tend to swell regularly, a few daily habits can keep it in check. Walking is one of the best remedies because your calf muscles act as pumps that push blood upward against gravity. Even a 10-minute walk breaks the cycle of fluid pooling. If your job keeps you seated for hours, set a reminder to stand and move every 30 to 60 minutes, and do ankle pumps at your desk in between.
Compression socks or stockings provide steady, graduated pressure that supports your veins throughout the day. They work best when you put them on in the morning before swelling starts. Look for 15 to 20 mmHg pressure for mild swelling, or ask your provider about higher-pressure options if you have chronic venous insufficiency. Avoid sitting with your legs crossed for long periods, and when you’re resting at home, get your feet up. Over time, maintaining a healthy weight also reduces the load on your veins and makes swelling less likely to recur.