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Oedema

Read about oedema (dropsy), which is the medical term for fluid retention in the body. Oedema often causes swelling in the feet and ankles.

Oedema is a build up of fluid in the body which causes the affected tissue to become swollen.

The swelling can occur in one particular part of the body or may be more general, depending on the cause.

This page covers:

Symptoms

Causes

Treatment

Lymphoedema

Symptoms of oedema

The accumulation of fluid under the skin causes swelling, often in the lower legs and ankles (known as peripheral oedema).

As well as swelling or puffiness of the skin, oedema can also cause:

  • skin discolouration
  • areas of skin that temporarily hold the imprint of your finger when pressed (known as pitting oedema)
  • aching, tender limbs
  • stiff joints
  • weight gain

Causes of oedema

It's normal to have some swelling in your legs at the end of the day, particularly if you've been sitting or standing for long periods.

Oedema is often a symptom of an underlying health condition. It can occur as a result of the following conditions or treatments:

Immobility and standing for long periods are the two most common causes of oedema in the legs.

Other possible causes include:

Treating oedema

Oedema is often temporary and clears up by itself. For example, if you've been standing up for too long on a hot day, your ankles may swell up until you get the chance to put your feet up and rest.

If oedema doesn't go away by itself, see your GP. They'll try and find out if there's an underlying cause which needs to be treated. This could involve taking medication or following some advice, such as:

If an underlying condition is causing the fluid imbalance, it should clear up after the condition has been diagnosed and treated.

Lymphoedema

Lymphoedema is swelling in the legs caused by a blockage in the lymphatic system, or an inherited condition.

The lymphatic system consists of a series of lymph nodes (glands) connected by a network of vessels (lymphatics), similar to blood vessels.

Fluid surrounding body tissues usually drains into nearby lymph vessels so it can be transported back into the blood. However, if the lymph vessels are blocked, the fluid can't be reabsorbed and will build up in the tissue.

Unlike oedema, lymphoedema is a long-term condition that can cause discomfort, pain and a loss of mobility.

It can't be cured, but it can be controlled using a number of treatments, including:

Read more about lymphoedema.

 

 

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