Swollen ankles usually respond well to a few simple strategies you can start at home: elevating your legs, cutting back on salt, moving more, and wearing compression socks. In most cases, the swelling is caused by fluid pooling in your lower legs after long periods of sitting or standing, excess sodium, or a medication side effect. Sometimes, though, ankle swelling signals something more serious that needs medical attention.
Elevate Your Legs Above Your Heart
The single fastest way to bring down ankle swelling is to lie back and prop your legs up so they’re higher than your heart. This lets gravity pull the trapped fluid back toward your core instead of letting it sit in your feet and ankles. Aim for about 15 minutes per session, three to four times a day. A couple of stacked pillows or a wedge cushion on your couch works well. If you spend most of your day at a desk, even propping your feet on a footrest helps slow the buildup, though it won’t drain fluid as effectively as lying down with your legs truly elevated.
Get Your Legs Moving
Your calf muscles act as a pump for the veins in your lower legs. Every time they contract, they squeeze blood and fluid upward toward your heart. When you sit or stand still for hours, that pump shuts off and fluid accumulates. Walking is the simplest fix. Even a five-minute loop around your office or living room every hour makes a noticeable difference.
If you can’t get up and walk (long flight, recovery from surgery, desk job), ankle pumps are a good substitute. Point your toes down, then pull them up toward your shin, and repeat. Ten repetitions every hour is a reasonable target. Calf raises, where you stand and lift your heels off the ground, work the same pump more aggressively and are worth adding if you’re on your feet anyway.
Cut Back on Sodium
Salt causes your body to hold onto water. The more sodium in your bloodstream, the more fluid stays in your tissues instead of being filtered out by your kidneys. For people dealing with fluid retention, keeping sodium under 2,000 mg per day is a common clinical target. That’s tighter than you might think. A single fast-food meal can easily exceed that in one sitting.
The biggest sodium sources aren’t the salt shaker on your table. They’re processed and packaged foods: canned soups, deli meats, frozen meals, chips, bread, and condiments like soy sauce. Reading nutrition labels and cooking more meals from scratch are the two most effective ways to get your intake down. You’ll often notice a difference in swelling within a few days of cutting sodium significantly.
Try Compression Socks
Compression stockings apply steady, graduated pressure to your lower legs, which helps push fluid upward and prevents it from pooling around your ankles. They come in different pressure levels measured in millimeters of mercury (mmHg). Low compression (under 20 mmHg) is usually enough for mild, occasional swelling, and you can buy these over the counter. Medium compression (20 to 30 mmHg) works better for moderate swelling, and high compression (above 30 mmHg) is reserved for severe swelling or conditions like lymphedema and typically requires a prescription or professional fitting.
Put them on first thing in the morning before swelling has a chance to build up. If you wait until your ankles are already puffy, they’ll be harder to get on and less effective. Knee-high styles are the most common for ankle swelling.
Check Your Medications
Several common medications cause ankle swelling as a side effect. The most well-known culprits are calcium channel blockers, a class of blood pressure drugs. Anywhere from 1 to 15% of people taking these medications develop ankle swelling, and at higher doses that number can climb dramatically. The effect is dose-related, so it tends to get worse if your dosage increases.
Over-the-counter pain relievers in the anti-inflammatory category (ibuprofen, naproxen) can also cause fluid retention, especially with regular use. Certain diabetes medications, steroids, and hormone therapies are other common offenders. If your swelling started or worsened after beginning a new medication, that connection is worth raising with your prescriber. There are often alternative drugs that don’t carry the same side effect.
What Causes Persistent Swelling
When ankle swelling doesn’t go away with elevation and basic self-care, or when it’s getting progressively worse over weeks, an underlying condition may be driving it. The most common medical causes include:
- Chronic venous insufficiency. The one-way valves in your leg veins become damaged or weakened, allowing blood to flow backward and pool in your lower legs. This is especially common in people who’ve had blood clots or who stand for long hours over many years. The swelling is usually worse by the end of the day and may come with visible varicose veins or skin changes near the ankles.
- Heart failure. When the heart can’t pump blood efficiently, it backs up in the veins and forces fluid into the tissues. The swelling typically affects both legs and may be accompanied by shortness of breath, fatigue, or abdominal bloating.
- Kidney problems. Damaged kidneys may fail to filter enough protein, which leads to lower protein levels in your blood. Since proteins help keep fluid inside your blood vessels, losing them causes fluid to leak into surrounding tissues.
Your doctor can check for these conditions with relatively straightforward tests: blood work, a urine sample, an ultrasound of your leg veins, or an echocardiogram of your heart.
How Doctors Assess Swelling Severity
If you visit a doctor for swollen ankles, they’ll likely press a finger into the swollen area for a few seconds and then release it. If the pressure leaves a visible dent that takes time to bounce back, that’s called pitting edema. Doctors grade it on a 1 to 4 scale based on how deep the dent is and how long it takes to refill. A grade 1 leaves a shallow 2 mm pit that rebounds immediately. A grade 4 leaves an 8 mm pit that can take two to three minutes to fill back in. Higher grades generally point toward more significant fluid overload and a greater need to identify the underlying cause.
When Swelling Is Only on One Side
Swelling in both ankles is usually related to something systemic: too much salt, a medication, prolonged sitting, or a condition affecting your heart, kidneys, or veins. Swelling in just one leg is a different story and needs prompt attention because it can signal a deep vein thrombosis, a blood clot in one of the deep veins of your leg.
The hallmark signs of a blood clot include swelling that comes on suddenly in one leg, pain or tenderness (especially when standing or walking), warmth in the swollen area, and skin that looks red or discolored. You may also notice that the veins near the surface look larger than usual. A blood clot can break loose and travel to your lungs, which is a medical emergency. If you have these symptoms, get evaluated the same day rather than waiting to see if it resolves.
Swollen Ankles During Pregnancy
Some ankle swelling is completely normal during pregnancy, especially in the third trimester. Your body carries significantly more blood volume, and the growing uterus puts pressure on the veins returning blood from your legs. Elevating your feet, staying active, and wearing compression stockings all help.
The red flag is sudden, severe swelling, particularly if it involves your face and hands or comes with rapid weight gain of more than 5 pounds in a single week. These can be signs of preeclampsia, a serious pregnancy complication involving high blood pressure that requires immediate medical evaluation.
What About Natural Diuretics?
You’ll find plenty of recommendations online for dandelion root tea, parsley, ginger, hawthorn, and other herbal diuretics. In theory, increasing urine output could help clear excess fluid. In practice, there’s very little clinical evidence that any of these work reliably as diuretics. Some of these herbs can also interact with medications or worsen certain health conditions. Sticking with proven strategies like sodium reduction, compression, elevation, and movement will give you far more consistent results.