Lymphostasis or Varicose Veins: How to Tell the Difference in Leg Swelling

In short: varicose swelling is an “evening” heaviness, a soft puffiness that subsides after a night with legs elevated, while lymphostasis is a dense, “stony” swelling that does not decrease overnight and often starts on the dorsum of the foot. The main test is to press with a finger: with venous swelling, the pit quickly disappears; with lymphatic swelling, it remains for a long time, and the skin above it cannot be pinched into a fold (Stemmer's sign). But an accurate diagnosis is made only after examination and ultrasound.

Patients complaining of “swollen legs” often arrive with an incorrect self-diagnosis. People spend years applying venotonics to lymphedema, or conversely, try to treat varicose veins with massage, which only harms both conditions. Let's examine this in detail so you understand which specialist to see and what to expect from the examination.

Why Confusion Is Dangerous: The Cost of a Mistake

Mixing up these two conditions is not just an imprecise wording. They involve different mechanisms, different tissues, and different treatment strategies. Venous swelling is a consequence of valve insufficiency and blood stasis. Lymphatic swelling is a consequence of impaired lymph transport, where lymph cannot move from the foot to the thoracic duct.

If you treat lymphostasis as varicose veins (with compression stockings and venotonics), you will not address the main problem—protein-rich swelling. If you treat varicose veins as lymphostasis (with manual massage and bandages), you may provoke thrombosis. So before buying stockings or booking a massage, let's check what exactly is swelling.

Venous Swelling: “Evening” and Pliable

Venous insufficiency is the most common cause of lower limb swelling. The mechanism is simple: blood must rise against gravity. When veins are dilated and valves do not close, some blood stagnates below. Fluid leaks through the capillary wall into the interstitial space.

Characteristic signs of venous swelling:

• Appears in the evening, after prolonged sitting or standing.
• Soft to the touch, skin is warm, may be slightly bluish.
• Subsides overnight, especially if you slept with the foot of the bed elevated.
• Asymmetric—often one leg swells more than the other (the one with more pronounced varicose veins).
• Sock elastic mark—a clear band remains that slowly smooths out.
• Associated symptoms: heaviness, fullness, night cramps, bulging veins.

An important nuance: venous swelling is the “upper” part of the lower leg and ankle. The foot usually does not swell or swells slightly. If you have a “cushion” above the ankle but the toes and dorsum of the foot are normal—this is more likely veins.

Lymphatic Swelling: Dense, “Wooden,” Morning

Lymphedema is a disorder of lymph outflow. The lymphatic system is the body's “sewage system” that removes proteins, toxins, and excess fluid. When it fails, protein accumulates in tissues, attracts water, and forms a dense, persistent swelling.

How to distinguish lymphostasis:

• Swelling starts on the dorsum of the foot—a “cushion” appears on the instep, toes become sausage-like.
• Does not go away overnight. In the morning it may be slightly less, but does not disappear completely.
• Dense to the touch. Pressing with a finger leaves a pit that smooths out slowly (more than 30 seconds).
• Stemmer's sign: if you try to pinch the skin and subcutaneous tissue on the dorsum of the second toe into a fold, you cannot—the skin is too thick and dense.
• Progresses gradually: first the foot swells, then the lower leg, then the thigh.
• Skin is pale, smooth, may be dry. Venous pattern is usually not visible.

Lymphostasis can be primary (congenital hypoplasia of vessels) or secondary (after surgery, radiation therapy, erysipelas). It also often combines with varicose veins—this is called phlebolymphedema. In that case, the patient has both varicose nodes and dense swelling that does not go away after sleep.

Cardiac and Renal Swelling: When the Problem Is Not in the Legs

Sometimes a patient comes to me with “varicose veins,” but in fact they have swelling due to the heart or kidneys. This is important because I treat vessels, not internal organs.

Differences of cardiac swelling:

• Bilateral and symmetric—both legs swell equally.
• Appears in the evening, but unlike venous swelling, it is not accompanied by pain or heaviness in the veins.
• Associated symptoms: shortness of breath when walking, palpitations, bluish lips.
• Skin is cold, pale, cyanotic.

Renal swelling:

• Morning—maximal after waking, especially on the face and eyelids.
• “Floating”—shifts with changes in body position.
• Associated symptoms: changes in urine color, swelling in the hands, increased blood pressure.

If you notice shortness of breath, chest pain, or facial swelling in the morning—this is not a reason to see a phlebologist. This is a reason to urgently visit a therapist or cardiologist. In such cases, I always refer for an ECG and blood tests before talking about veins.

How to Get Examined: What You Need

No doctor makes a diagnosis “by eye” — I always prescribe instrumental diagnostics. Here is the minimum set.

If venous swelling is suspected:

• Vein duplex ultrasound of the lower extremities—the gold standard. It shows the condition of the valves, blood flow velocity, and the presence of clots. It is painless and takes 20–30 minutes. More about the procedure—vein duplex ultrasound.
• Blood tests—clinical, coagulation profile (clotting), D-dimer if thrombosis is suspected.

If lymphostasis is suspected:

• Vein duplex ultrasound—to rule out a venous component.
• Lymphoscintigraphy—a radioisotope study that shows how lymph moves. It is performed in specialized centers, not every clinic has it.
• MRI or CT—if compression of lymphatic pathways by a tumor or after trauma is suspected.

If heart/kidney issues are suspected:

• ECG, Echo-CG, creatinine test, and urine protein test. This is not for me, but for a cardiologist or nephrologist.

Important: if you have swelling in one leg, sharp pain, redness, and fever—this may be thrombosis. This is an emergency. Do not wait until morning; call an ambulance or go to the emergency room. I wrote about thrombosis separately—thrombosis treatment.

What to Do If Swelling Is Already Present: First Aid

While you wait for your doctor's visit, there are several safe measures that will not harm either varicose veins or lymphostasis.

• Sleep with the foot of the bed elevated—place a pillow or rolled blanket under the mattress so that your legs are 10–15 cm above the level of your heart.
• Movement: moderate-paced walking, flexing and extending the feet at the ankle—this works as a “muscle pump.”
• Contrast shower for the legs (only if there is no thrombosis or trophic changes).
• Do not sit with your legs crossed—this compresses the popliteal vein.
• Limit salt—it retains fluid.

What you should NOT do: steam your legs, get aggressive massage, apply warming compresses, or self-prescribe diuretics. Diuretics for lymphostasis are a mistake: they expel water, but protein remains, and the swelling returns even denser.

When Surgery Is Needed: Don't Be Scared Prematurely

If you have confirmed varicose veins, not lymphostasis, modern phlebology offers minimally invasive methods. This is not a “strip” operation like 20 years ago. These are punctures and micro-punctures, after which you can go home the same day.

• EVLA (endovenous laser ablation)—we seal the incompetent vein with a laser from the inside. More—EVLA.
• Miniphlebectomy—removal of varicose nodes through 1–2 mm punctures, no incisions. More—miniphlebectomy.
• Sclerotherapy—gluing small veins and spider veins with injections. A method for spider veins and reticular veins.
• CLaCS—cryo-laser plus sclerotherapy for spider veins: a transdermal laser and a sclerosant into the feeding vein, in one session and without anesthesia. About it—CLaCS.

If you have lymphostasis, vein surgery will not help. You need a different approach: compression stockings class 2–3, manual lymphatic drainage massage, pneumatic compression, physical therapy. And no self-treatment.

Why I Ask You to Come for an Appointment Instead of Diagnosing from a Photo

I understand the desire to save time and money. But leg swelling is a symptom that can have 10 different causes. I cannot assess density, skin temperature, or tissue mobility from a photo. I need to feel the leg, perform tests, and look at the ultrasound.

Therefore, my standard algorithm is: first appointment and examination, then vein duplex ultrasound, then a written estimate. I never quote the cost of treatment over the phone—that would be dishonest to you, because without diagnostics I myself do not know what exactly needs to be treated. The cost depends on the extent, and it is always fixed in the estimate before the procedures begin.

Instead of a Conclusion: A Practical Checklist

So, let's summarize. If you woke up in the morning and your legs “don't fit” into your shoes—this is not varicose veins. If in the evening there is heaviness, and in the morning everything is gone—most likely, it's veins. But don't guess.

Practical conclusion: get a vein duplex ultrasound. This is the only objective method that shows both the condition of the valves, the presence of clots, and tissue thickness. If the ultrasound is clean but swelling persists—go to a therapist and check the heart and kidneys. If the ultrasound shows reflux—we address the veins. If the swelling is dense and the ultrasound does not explain it—we think about lymphedema and refer for lymphoscintigraphy.

Do not postpone your visit if the swelling lasts more than 2 weeks, worsens, or if pain and redness appear. You can book an appointment by phone +998 99 883-93-21—I see patients at M-Clinic in Tashkent. But even if you go to another phlebologist, the main thing is not to self-treat. Your legs carry you all your life, and they deserve a competent approach.

This article is for informational purposes only and does not replace a consultation with a qualified physician. If you are experiencing symptoms, please see a specialist.