Swollen ankles usually respond well to a few simple strategies you can start right now: elevating your legs, moving your feet and ankles, and cutting back on salt. Most ankle swelling is caused by fluid pooling in the lower legs after long periods of sitting or standing, and it resolves within hours once you help that fluid drain. But swelling that appears suddenly in one leg, comes with pain or warmth, or accompanies other symptoms like shortness of breath needs prompt medical attention.
Elevate Your Legs the Right Way
Gravity is the main reason fluid collects in your ankles, and gravity is also the simplest fix. The key is getting your feet above the level of your heart so fluid can drain back toward your core. When you’re lying down, stack pillows under your lower legs so your foot is higher than your knee, and your knee is higher than your hip. When you’re sitting, a footstool alone usually isn’t enough because your feet stay below heart level. Reclining while propping your legs on cushions works better.
Plan to stay elevated for at least 20 to 30 minutes at a time, and repeat several times throughout the day if swelling is persistent. You’ll often notice your ankles look slimmer after even one session, but consistent elevation over a few days makes the biggest difference, especially after an injury or surgery.
Use Ankle Pumps to Push Fluid Out
Your calf muscles act as a pump for your veins. Every time they contract, they squeeze blood and lymph fluid upward toward your heart. Sitting or standing still for hours lets that pump go idle, and fluid accumulates. Ankle pumps are the easiest way to restart it.
Sit or lie down with your legs extended. Point your toes toward your knees as far as you can, then point them away from you as far as you can. Alternate back and forth for two to three minutes. Repeat this cycle two to three times every hour while you’re awake. It’s a small motion, but the rhythmic contraction of your calf muscles significantly helps move fluid out of your lower legs. You can do these at your desk, on a plane, or in bed.
Reduce Your Sodium Intake
Salt makes your body hold onto water. When you eat a high-sodium meal, your kidneys retain extra fluid to keep your blood’s salt concentration balanced, and some of that fluid ends up in your tissues. For people already dealing with swelling, Georgetown University’s nephrology department recommends keeping daily sodium intake between roughly 1,375 and 1,800 milligrams. For context, a single fast-food burger can contain over 1,000 milligrams.
The biggest sources of hidden sodium are processed and packaged foods: canned soups, deli meats, frozen meals, bread, and condiments like soy sauce or salad dressing. Cooking at home with fresh ingredients gives you far more control. Reading nutrition labels for the sodium line is the fastest way to start cutting back. Most people notice a reduction in puffiness within a few days of lowering their salt intake.
Stay Hydrated, Even If It Seems Counterintuitive
Drinking more water when you’re already swollen sounds wrong, but a well-hydrated body is actually less likely to retain fluid. When you’re mildly dehydrated, your body holds onto whatever water it has, which can worsen swelling. Steady water intake throughout the day helps your kidneys flush excess sodium and keeps fluid cycling normally rather than pooling in your tissues.
Check Your Medications
Certain blood pressure medications are a very common cause of ankle swelling. Calcium channel blockers, a widely prescribed class of blood pressure drugs, interfere with the way small blood vessels in your legs regulate pressure when you stand. This causes fluid to leak out of capillaries and into the surrounding tissue. Research published in the American Heart Association’s journal Hypertension found this isn’t a rare side effect but rather a consistent, dose-dependent pharmacological effect of the entire drug class. Higher doses cause more swelling.
Pain relievers like ibuprofen and naproxen can also cause fluid retention. Certain diabetes medications, steroids, and some antidepressants are other common culprits. If your ankle swelling started or worsened after beginning a new medication, that connection is worth raising with your prescriber. Switching to a different drug in the same category or adjusting your dose often resolves the problem.
Compression Socks and Supportive Clothing
Graduated compression socks apply the most pressure at your ankle and gradually less pressure as they go up your calf. This helps prevent fluid from settling downward and assists your calf muscles in pumping blood back up. They’re most effective when you put them on first thing in the morning before swelling has a chance to develop. Knee-high compression socks rated at 15 to 20 mmHg are available without a prescription and are a good starting point for mild, everyday swelling. If your swelling is more significant, a healthcare provider can recommend a higher compression level.
Swelling During Pregnancy
Some ankle swelling during pregnancy is normal, especially in the third trimester, as your body carries extra blood volume and your growing uterus puts pressure on the veins returning blood from your legs. Elevation, ankle pumps, and comfortable shoes all help.
What isn’t normal is sudden swelling in your hands and face. Pre-eclampsia, a serious blood pressure disorder, develops after 20 weeks of pregnancy and affects both the mother and baby. It’s diagnosed when blood pressure rises to 140/90 or above along with protein in the urine. Severe cases bring on intense headaches, visual disturbances like blurring or seeing spots, and upper abdominal pain. Sudden facial or hand puffiness alongside any of these symptoms warrants immediate medical evaluation.
When Swelling Signals Something Serious
Swelling in both ankles that comes and goes with activity, heat, or salty meals is usually benign. Swelling in one leg that appears suddenly is a different story. A deep vein thrombosis (a blood clot in a deep leg vein) typically causes swelling in just one leg along with pain or cramping that often starts in the calf, skin that looks red or purple, and a feeling of warmth in the affected area.
The danger is that a clot can break loose and travel to the lungs, a condition called pulmonary embolism. Warning signs include sudden shortness of breath, chest pain that worsens when you breathe deeply or cough, dizziness or fainting, a rapid pulse, and coughing up blood. These symptoms are a medical emergency.
Chronic Swelling and Vein Problems
If your ankles swell regularly and the strategies above only provide temporary relief, chronic venous insufficiency may be the underlying issue. This condition develops when the one-way valves inside your leg veins weaken or fail, allowing blood to flow backward and pool in your lower legs. In its earliest stage, you might not see visible changes but notice your legs feeling heavy, achy, or tired by the end of the day. As it progresses, you may develop visible spider veins, varicose veins, persistent swelling, and eventually skin changes like darkening or thickening near your ankles.
Venous insufficiency is graded on a scale from stage 0 (no visible signs, just symptoms) through stage 6 (active skin ulcers). It tends to worsen gradually over years, so getting evaluated when swelling becomes a regular pattern gives you the most options for slowing its progression. Compression therapy, exercise, and sometimes minimally invasive procedures to close damaged veins are the standard approaches.
Quick Daily Habits That Help
- Move every 30 to 60 minutes if you sit or stand for long stretches. Even a short walk or a set of ankle pumps makes a difference.
- Sleep with a pillow under your calves to keep fluid from settling overnight.
- Avoid crossing your legs when sitting, which compresses veins and restricts blood flow.
- Wear comfortable, supportive shoes. Tight footwear or high heels can restrict circulation around the ankle.
- Limit alcohol, which promotes dehydration and can trigger fluid retention as your body compensates.