Swollen One Leg? Don’t Ignore the Risk of Deep Vein Thrombosis
If you notice that one leg is significantly more swollen than the other, it could be a sign of deep vein thrombosis (DVT), a blood clot in a deep vein that can lead to life-threatening complications like pulmonary embolism. Recognizing this early can save your life.
Why One Leg Swells More Than the Other
Swelling in one leg often points to a localized problem like a blood clot, infection, or injury. When both legs swell evenly, the cause is more likely to be a systemic issue such as heart or kidney problems. This simple distinction helps you decide how urgently you must seek medical attention.
Check Your Symptoms and Medication Cabinet
Along with swelling, watch for redness, warmth, pain, or tenderness in the swollen leg—classic signs of DVT. Certain medications, especially hormone therapies and some blood pressure drugs, can increase your risk. Review any drugs you’re taking with your doctor, as they might contribute to leg swelling or clot risk.
Cost and Consequences of Delayed Diagnosis
A timely ultrasound to detect DVT typically costs between $200 and $500 without insurance but prevents far more expensive and dangerous complications. Untreated DVT can lead to hospitalization, long-term disability, or death. Early diagnosis and treatment with anticoagulants can reduce these risks dramatically.
Simple Self-Test: Measure and Compare
Use a tape measure to check the circumference of both calves and thighs. A difference greater than 3 centimeters between the swollen and normal leg could indicate a clot or other serious problem. Note any sudden onset of swelling—this warrants urgent medical evaluation.
Here are the 10 most common causes of one-leg swelling. Number 1 is the one that can turn deadly if you don’t recognize it fast.
