Swollen ankles, feet and legs (oedema)

Also called Oedema, Edema, or Fluid retention

Oedema is swelling caused by a build-up of fluid in the body. It often affects the feet, ankles and legs. It can happen after standing or sitting for a long time, in hot weather, during pregnancy, with some medicines, or because of conditions affecting the heart, kidneys, liver or veins.

Last updated Nov 9, 2026

What it is

Swelling often goes away by itself. Raising the legs, walking, wearing comfortable shoes and drinking enough water can help.

If it does not go away, a doctor can look for a cause, which may need treatment, such as heart or kidney medicines.

Common signs

  • Swollen feet, ankles or legs
  • Shiny, stretched skin
  • Skin that stays dented after being pressed
  • Shoes or socks feeling tight
  • Heavy or aching legs

How it is usually diagnosed

  • Examination
  • Blood and urine tests
  • Sometimes an ECG, echocardiogram or leg ultrasound

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Blood and urine test results
  • Heart or ultrasound reports
  • GP notes
  • Medicine lists

Questions to ask your doctor

  • What is causing the swelling?
  • Could any of my medicines be the cause?
  • Do I need any tests for my heart or kidneys?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Swelling with chest pain or breathlessness: call 112
  • Swelling in one leg that is painful, warm or red: get urgent help the same day

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

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