Swollen legs and feet

Sometimes our legs or feet become swollen and feel uncomfortable. This is known as oedema and it happens when fluid in our lower legs or feet has trouble returning back up through the body.

What can cause legs and feet to swell?

Venous hypertension / insufficiency

‘Venous’ is anything related to our veins. Swelling often happens when our veins are not working as well as they should. Blood is pumped from our heart to the rest of our body through our arteries and returns to our heart through your veins. Blood is then propelled back to our heart by our heart pumping. Our leg and foot muscles help this along by circulating blood as you walk and move your ankles.

Our veins contain one-way valves that stop the blood falling back towards your toes. These valves can become weak or damaged. When this happens, our veins become swollen (varicose veins) that blood is forced into the tissue of your skin making it swell.

What does oedema look like?

and image of chronic oedema
Oedema is a buildup of fluid in the tissues of the body. The swelling can occur in one particular part of the body (for example the feet or ankles), or may be more general, depending on the cause. This image shows a chronic case.


Legs and feet can also become swollen if we have problems with our lymphatic system. This is known as lymphoedema. The lymphatic system can be thought of as a waste disposal system that takes tissue fluid and waste products away from the tissues around your skin, fat, muscle and bone. Once the tissue fluid is inside the lymphatic vessels, which are just under the surface of our skin, it becomes known as ‘lymph’. Lymph is then transported in one direction by larger and deeper lymphatic vessels. Lymph moves when we move our muscles through exercise and by the lymph vessels contracting.

You can read more about lymphoedema at NHS Choices or on the information pages of the Lymphoedema Support Network.


Our legs and feet can also swell if we have a condition called lipoedema. Lipoedema is a condition that makes us accumulate fat below the waist, so our hips, buttocks and legs appear out of proportion to your upper body. It can also affect our arms. Lipoedema looks and feels different to normal body fat – it is softer and dimpled, like cellulite.

Lipoedema is thought to be a genetic inherited condition because often more than one family member is affected. It is thought to only affect women but there are very rare reports of men with similar signs and symptoms.

You can read more about lipoedema at Lipoedema UK

Getting your swollen legs and feet diagnosed

If your legs or feet are swollen, make an appointment at your GP practice. You might be given an appointment to see the nurse rather than the doctor as nurses are often responsible for caring for patients with leg problems.

Alternatively, there might be a Leg Club or specialist leg clinic in your area. You don’t need a referral from your GP to go to one of these

Remember to remove any nail polish from your toenails before your appointment.

When you see the nurse or doctor, they should:

  • Ask about your symptoms and how long you have had problems
  • Examine your lower legs
  • Do a special test called a Doppler Ultrasound. This test measures the blood pressure in your ankle and compares it to the pressure in your arm to see if you have problems with the blood supply to your lower leg. You may have to come back to have your Doppler test on another day or at another clinic but you should have this test within a few weeks of your first appointment.

You might also be offered some other tests to check for other health problems such as diabetes and anaemia that can affect your legs.

If your GP practice thinks you have problems with your veins or arteries, they might refer you for further tests at your local hospital or specialist clinic.

Treatment – what treatment will I be offered for swollen legs and feet?

The treatment for swollen legs depends on what has caused the swelling.

Compression therapy (support bandages or socks)

If your legs or feet are swollen because of venous insufficiency or lymphoedema and there are no problems with the blood supply to your legs or feet, then you might be offered compression therapy. Compression therapy improves blood supply by applying pressure to the leg. This can be done by bandaging the lower leg or by wearing supportive socks, stockings or tights. Compression therapy is very effective at reducing swelling and healing or preventing sores or ulcers.

There are lots of different types of compression therapy so ask your nurse to find something that is right for you. Your legs may feel uncomfortable at times in compression stockings or bandages. This is often towards the end of the day when your legs can become more swollen. This can be relieved by elevating your legs for a good amount of time. Stretching your ankles and calf muscles and wiggling toes can also help. You may have been experiencing pain in your ulcer before compression treatment. We would advise that you continue with any pain relief you may have been prescribed. Compression stockings or bandages should not increase pain. If your pain increases or becomes severe, contact the nurse or doctor who prescribed them.

Healthcare advice for swollen legs and feet

There are some lifestyle changes you can make to help reduce your swelling:

  • Maintain a healthy weight
  • Take light to moderate exercise such as swimming or walking for about thirty minutes at least three times a week
  • Avoid standing for a long time
  • Put your feet up – elevate your legs above your heart

Every so often, move your feet around in circles, then up and down. This helps your blood circulate and get back to your heart.

Further reading around swollen legs and feet

Cancer Related Lymphoedema – A Patient’s Guide (pdf Download)

Other support

Accelerate Accelerate CIC is an independent specialist team who assess and manage people with chronic swelling or non-healing lower leg wounds or ulcers. We're based in London but can accept national referrals from your GP / specialist. For those further afield, please call to discuss possible options.

Contact details
020 3819 6022
Find out more on the Accelerate CIC website

The British Lymphology Society (BLS) is a dynamic and innovative body providing a strong professional voice and support for those involved in the care and treatment of people with lymphoedema and related lymphatic disorders, including lipoedema.

Contact details
01452 790178
Find out more on the British Lymphology Society website

Lipoedema UK Their focus is to educate doctors, health professionals and the public about Lipoedema and its symptoms, so it may be diagnosed and treated earlier. They believe that with earlier diagnosis and treatment women can prevent developing further complications and manage their Lipoedema.

Contact details
Find out more on the Lipoedema UK website

Lymphoedema Support Network (LSN) is a national UK charity which provides information and support to people with lymphoedema.

Contact details
020 7351 0990
Find out more on the Lymphoedema Support Network website

The Lindsay Leg Club Foundation Promoting and supporting community based treatment, health promotion, education and ongoing care for people who are experiencing leg-related problems - including leg ulcers and other wound care issues.

Contact details
01473 749565
Find out more on the Lindsay Leg Club Foundation website

NHS Choices the official NHS website, which provides vital information and support about leg and foot signs and other symptoms.

Contact details
Call 111 - for non-emergency medical advice
Find out more on the NHS Choices website

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