From standing all day to underlying medical conditions, heel swelling is more common than you think. Here is how to decode the cause, when to worry, and what to put on your feet to heal.
Heel Swelling: A Quick Overview
Heel swelling — also called posterior heel edema or simply puffy heels — occurs when fluid accumulates in the soft tissues around the calcaneus (heel bone) or in the retrocalcaneal bursa, a fluid-filled sac that cushions the area where your Achilles tendon attaches. While sometimes harmless after a long day on your feet, persistent or unilateral heel swelling can signal an underlying issue that deserves attention.
The key to managing heel swelling is identifying whether it is acute (sudden onset) or chronic (persistent). Acute swelling is often injury-related — a strain, fracture, or bursitis. Chronic swelling may point to systemic conditions like venous insufficiency, lymphedema, or even kidney or heart issues. Your footwear choices play a major role in both causing and relieving heel swelling, which is why we have dedicated an entire section to smart shoe selection later in this guide.
“Heel swelling that comes and goes with activity is usually mechanical. But if your heel stays puffy overnight or is accompanied by warmth, redness, or a fever, that is a different story. Don’t wait — get it checked.”
— Dr. Mariana Costa, DPM, podiatric surgeon
11 Common Causes of Heel Swelling
Heel swelling rarely has one single cause. More often, it is the result of a combination of factors — from the shoes you wear to how your circulatory system is functioning. Below are the most common drivers, organized from mechanical to systemic.
1. Poorly Fitted or Tight Shoes — The most overlooked cause
Shoes that are too tight across the heel or lack adequate depth cramp the soft tissues and restrict venous return, causing fluid to pool. Narrow heel counters, stiff back straps, and shoes with insufficient cushioning increase pressure on the retrocalcaneal bursa. Over time, this triggers local inflammation and swelling. The fix: choose shoes with a wide heel base, soft padded collars, and at least half an inch of space behind your heel.
2. Overuse & Achilles Tendinopathy — Runner’s heel
Repetitive loading from running, jumping, or walking on hard surfaces can irritate the Achilles tendon and the bursa beneath it. This leads to micro-tears, inflammation, and visible swelling just above or behind the heel bone. Runners and fitness enthusiasts often notice it after increasing mileage or intensity too quickly. Rest, ice, eccentric heel drops, and proper footwear are the first-line treatments.
3. Chronic Venous Insufficiency (CVI) — When veins stop working
CVI affects up to 30% of adults over 50. When the valves in your leg veins fail, blood pools in the lower extremities, causing swelling in the feet, ankles, and heels. The swelling is usually bilateral, worse at the end of the day, and improves with elevation. Compression stockings, movement, and avoiding prolonged sitting or standing are the mainstays of management. In severe cases, venous ablation may be necessary.
4. Heel Bone Fracture (Stress or Acute) — Sudden trauma
Falling from a height or a heavy impact can fracture the calcaneus. Stress fractures develop more gradually from repetitive impact. Both present with focal heel pain, swelling, bruising, and difficulty bearing weight. A calcaneal fracture is a serious injury that often requires immobilization, surgery, and a lengthy recovery. If you cannot put weight on your heel after a fall, go to the ER immediately.
5. Retrocalcaneal Bursitis — Bursa inflammation behind the heel
The retrocalcaneal bursa sits between the Achilles tendon and the heel bone. When it becomes inflamed — often from repetitive friction, tight shoes, or overuse — it fills with fluid and creates a visible, tender swelling on the back of the heel. The area may feel warm and look red. Treatment includes activity modification, ice, NSAIDs, and sometimes corticosteroid injection (done carefully, as it can weaken the Achilles).
6. Lymphedema — Fluid backup from lymphatic system
Lymphedema is the accumulation of lymph fluid in the tissues, often due to damaged or blocked lymphatic vessels. It can be primary (genetic) or secondary (after surgery, infection, or radiation). The swelling is typically painless at first, pits when pressed, and may affect the entire foot and ankle, including the heel. Complete decongestive therapy (CDT) by a certified lymphedema therapist is the gold standard treatment.
7. Heart, Kidney, or Liver Disease — Systemic edema
Bilateral heel and ankle swelling can be the first sign of congestive heart failure, kidney disease, or cirrhosis. In these conditions, the body struggles to regulate fluid balance, and gravity pulls excess fluid to the lowest points — your heels. Look for accompanying symptoms: shortness of breath, fatigue, reduced urine output, or abdominal swelling. If you have a history of heart, kidney, or liver disease and notice new swelling, contact your physician promptly.
8. Pregnancy-Related Edema — Hormonal & circulatory changes
During pregnancy, blood volume increases by about 50%, and the growing uterus puts pressure on pelvic veins. This combination often leads to mild bilateral foot and heel swelling, especially in the third trimester. Elevation, hydration, compression socks, and wearing supportive shoes with a wide toe box and heel can help. Sudden severe swelling accompanied by headache or vision changes may be preeclampsia — seek immediate care.
9. Medication Side Effects — Drug-induced edema
Several common medications can cause heel and ankle swelling as a side effect. Top offenders include calcium channel blockers (e.g., amlodipine), NSAIDs (used long-term), corticosteroids, certain antidepressants, and diabetes medications like thiazolidinediones. If you suspect a medication is causing your swelling, do not stop it abruptly — talk to your prescribing doctor about alternatives or dose adjustments.
10. Gout or Pseudogout — Crystal-induced inflammation
While gout famously attacks the big toe, it can also strike the heel. Uric acid crystals deposit in the retrocalcaneal bursa or Achilles tendon, causing sudden, excruciating pain, redness, and swelling that appears almost overnight. Pseudogout (calcium pyrophosphate crystals) behaves similarly. A blood test for uric acid and joint fluid analysis can confirm the diagnosis. Acute attacks are treated with colchicine, NSAIDs, or corticosteroids.
11. Rheumatoid Arthritis & Other Inflammatory Conditions
Rheumatoid arthritis, psoriatic arthritis, and ankylosing spondylitis can all cause enthesitis — inflammation where tendons and ligaments attach to bone. The Achilles tendon insertion at the heel is a common site. The swelling is often accompanied by morning stiffness lasting more than 30 minutes, fatigue, and joint pain in other areas. Disease-modifying antirheumatic drugs (DMARDs) and biologics are the standard treatments.
When to Worry: Red Flag Symptoms
Most heel swelling is benign and self-limiting. But certain signs demand immediate medical attention. Use the table below to help you decide.
| Symptom / Situation | What It Could Mean | Action |
|---|---|---|
| Swelling after a fall or direct impact | Calcaneal fracture or severe contusion | ER or urgent care — X-ray needed |
| Sudden, severe swelling with redness and heat | Gout, pseudogout, or infection | See a doctor within 24 hours |
| One-sided swelling with calf pain | Deep vein thrombosis (DVT) | ER immediately — ultrasound needed |
| Bilateral heel swelling + shortness of breath + fatigue | Congestive heart failure | ER or cardiology — evaluate fluid status |
| Swelling + reduced urine output + foamy urine | Kidney disease | See your PCP or nephrologist within 2 days |
| Swelling + fever >100.4°F | Infection (cellulitis, septic arthritis) | ER immediately |
| Swelling during pregnancy + severe headache + vision changes | Preeclampsia | ER or OB triage |
If your heel swelling is accompanied by chest pain, difficulty breathing, or coughing up blood, call 911. These could be signs of a pulmonary embolism, especially if you have been immobile or recently had surgery.
How to Reduce Heel Swelling at Home
For mechanical or overuse-related heel swelling, these evidence-based home strategies can make a significant difference within 48–72 hours.
Take a photo of both heels at the same time each day (morning and evening). Note any activities, shoe choices, or meals that seem to correlate. This log is invaluable for your doctor.
Medical Treatments & When You Need a Doctor
If home care does not improve your heel swelling within 3–5 days — or if you have any red flag symptoms — it is time to see a healthcare provider. Depending on the underlying cause, treatment may include:
- Custom orthotics with heel wedging
- Physical therapy (eccentric loading, manual drainage)
- Compression therapy (graded stockings, pneumatic pumps)
- NSAIDs for inflammation (short-term)
- Activity modification and gait retraining
- Corticosteroid injection (retrocalcaneal bursitis)
- Shockwave therapy (chronic tendinopathy)
- Diuretics (for heart, kidney, or liver-related edema)
- Venous ablation (for chronic venous insufficiency)
- Surgery (calcaneal fracture, severe bursitis, tumor)
A note on diuretics: Water pills are sometimes prescribed for edema, but they should never be used without a doctor’s supervision. Self-treating with over-the-counter diuretics can lead to dehydration, electrolyte imbalances, and kidney injury. Always identify the root cause first.
“I see too many patients who have been living with heel swelling for months, assuming it is ‘just from standing.’ By the time they come in, they have a treatable condition that has progressed. If your heel is still puffy after 3 days of rest and elevation, please make an appointment.”
— Dr. Mariana Costa, DPM
Best Shoe Features for Heel Swelling
Your shoes are either part of the problem or part of the solution. When you are dealing with heel swelling, every shoe feature matters — from the back counter to the sole stack height. Here is what to look for.
During a flare-up, consider wearing shoes with a heel lift insert (available at most drugstores or online for under $15). A 5–10 mm lift reduces tension on the Achilles and bursa, often bringing immediate relief. Combine with a wide shoe that has a removable insole so you have room for the lift.
Myths vs. Facts About Heel Swelling
There is a lot of misinformation circulating about heel swelling — especially on social media. Let us clear up the most common myths.
Not even close. In fact, fractures account for less than 5% of heel swelling cases. The vast majority are due to soft tissue issues: bursitis, tendinopathy, venous insufficiency, or simply tight shoes. A fracture is usually accompanied by intense pain, bruising, and inability to bear weight — not just puffiness.
Actually, heat dilates blood vessels and can increase fluid leakage into the tissues, making swelling worse. For acute swelling, cold therapy is the correct approach. For chronic swelling without inflammation, contrast baths (alternating warm and cool) may offer some benefit, but plain cold is safer and more effective for most people.
Compression socks benefit anyone with venous insufficiency, lymphedema, or occupational leg swelling — including nurses, teachers, restaurant workers, and pregnant people. Graduated compression (15–20 mmHg or 20–30 mmHg) is safe for most adults. Just make sure you are fitted properly; too-tight compression can cause problems.
Excess body weight increases pressure on the heel structures and impairs venous and lymphatic return. Studies show that a 5–10% reduction in body weight can reduce lower extremity edema by 30–40% in people with obesity-related venous insufficiency. Combined with improved diet (lower sodium) and walking, weight loss is one of the most effective long-term strategies.
Frequently Asked Questions
Is heel swelling a sign of heart failure? — It can be, especially if both heels and ankles are affected
Yes, bilateral heel and ankle swelling that is pitting (leaves an indent when pressed) and accompanied by shortness of breath, fatigue, or unexplained weight gain can be a sign of congestive heart failure. The heart is not pumping efficiently, so fluid backs up in the extremities. If you have a history of heart disease and notice new swelling, see your cardiologist promptly.
Can dehydration cause heel swelling? — Indirectly, yes — it makes your body hold onto sodium
When you are dehydrated, your kidneys conserve sodium and water to maintain blood volume. This can paradoxically lead to fluid retention in the lower extremities. Staying well-hydrated (aim for 8–10 glasses of water per day) helps your kidneys flush excess sodium and reduces edema. If you already have heart or kidney disease, talk to your doctor about your ideal fluid intake.
How long does heel swelling last after a sprain or strain? — 3–10 days for mild injuries
After an acute ankle or heel sprain, swelling typically peaks around 24–48 hours and then gradually subsides over 3–10 days with proper rest, ice, compression, and elevation. If swelling persists beyond 2 weeks or is still worsening after 3 days, you may have a more significant injury (e.g., a fracture or full-thickness tendon tear) and should seek medical evaluation.
What is the difference between pitting and non-pitting edema? — A clue to the underlying cause
Pitting edema — pressing leaves a temporary indent — is most often caused by venous insufficiency, heart failure, kidney disease, or medication side effects. Non-pitting edema — the skin feels tight and does not indent — is more typical of lymphedema, thyroid disease (myxedema), or lipedema. Your doctor can use this distinction, along with other findings, to narrow down the diagnosis.
Can wearing the wrong shoes cause permanent heel damage? — Over years, yes — chronic pressure can deform structures
Chronic compression from poorly fitted shoes can lead to retrocalcaneal bursitis, Haglund’s deformity (a bony enlargement on the back of the heel), and Achilles tendinopathy. In severe, untreated cases, the bursa may become chronically inflamed and thickened, and the heel bone can develop spurs. The good news: most of these changes are reversible or manageable with proper footwear and early intervention.
Should I ice or heat for heel swelling? — Ice for acute, heat for chronic stiffness (not swelling)
Use ice if the swelling came on suddenly, is warm to the touch, or is accompanied by pain after activity. Ice constricts blood vessels and reduces inflammation. Use gentle heat only if the swelling is chronic and you have morning stiffness without redness or warmth — heat increases blood flow and can help mobilize fluid, but it should never be used on acutely swollen or red tissue.
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