If your feet or ankles swell, it doesn’t automatically mean one specific disease. Swelling (edema) has many possible causes, ranging from harmless to requiring medical attention.
Common possibilities include:
Standing or sitting for long periods — fluid can collect in the lower legs.
Too much salt — can cause temporary fluid retention.
Certain medications — including some blood-pressure medicines and anti-inflammatory drugs.
Venous insufficiency — leg veins don’t return blood to the heart efficiently.
Heart, kidney, or liver problems — these can cause fluid accumulation, particularly when swelling is persistent or occurs in both legs.
🚨 When swelling needs urgent attention
Sudden swelling in one leg, especially with pain, warmth, or redness, can be a sign of a blood clot. If swelling occurs with shortness of breath, chest pain, or coughing blood, seek emergency care immediately.
If swelling is persistent, worsening, or unexplained, it’s worth having it evaluated rather than assuming it is simply a result of aging or salt intake.
