“If Your Feet Swell, It Is a Clear Sign That…” — Not Necessarily
Swollen feet are not a clear sign of one particular disease. Foot and ankle swelling is usually called edema, meaning excess fluid has accumulated in the tissues. It can have harmless causes, but sometimes it signals an underlying medical problem.
Common causes include
- Sitting or standing for a long time
- Eating a lot of salty food
- Being overweight
- Varicose veins or poor venous circulation
- Certain medications, including some blood-pressure medicines
- Injury or inflammation
- Pregnancy
Conditions that can also cause swelling
Persistent or unexplained swelling can sometimes be associated with heart failure, kidney disease, liver disease, lymphatic problems, or a blood clot (DVT).
For example, kidney disease can cause the body to retain salt and fluid, producing swelling in the legs and sometimes around the eyes.
🚨 Pay particular attention to one-sided swelling
Sudden swelling in one foot or leg, especially when accompanied by pain, warmth, redness, or tenderness, needs prompt medical evaluation because a blood clot is one possible cause.
If swelling occurs with chest pain, difficulty breathing, coughing up blood, fainting, or severe dizziness, seek emergency medical care immediately. These can indicate a potentially life-threatening clot that has traveled to the lungs or another serious heart/lung problem.
What you can do for mild swelling
If you’ve simply been sitting or standing for a long time, elevating your legs, gentle walking, avoiding prolonged immobility, and reducing excessive salt intake may help. Don’t stop a prescription medicine because you suspect it’s causing swelling—discuss it with your clinician instead.
