Puffy ankles at the end of the day are a common complaint, but they are not always trivial. While a long day on your feet can explain mild swelling, persistent or one-sided puffiness may point to conditions ranging from venous insufficiency to heart disease. Knowing the difference could matter for your long-term health.
En bref
- —Swollen ankles can signal heart, kidney or vein problems
- —One-sided swelling may mean a blood clot — act fast
- —Salt, hydration and compression socks can help at home
Fluid buildup in the legs: the most common culprits
Ankle swelling — medically known as peripheral edema — occurs when fluid accumulates in the tissues of the lower legs. According to the source, the most frequent triggers are entirely benign: sitting or standing for extended periods reduces circulation, causing fluid to pool around the ankles by the end of the day.


