Lymphoedema after cancer treatment

Recognising changes and getting help

Lymphoedema is swelling caused by a build-up of fluid when the body's lymph drainage system is not working well. It can happen after cancer or its treatment, including months or years later. Report new swelling or a persistent feeling of heaviness early. A trained team can assess the cause and help you manage it.

Not all swelling after cancer treatment is lymphoedema. A blood clot, infection, medicine effect or another health problem can look similar. Sudden swelling or pain in one limb needs urgent assessment. Sudden breathlessness or chest pain needs emergency care. Do not start a new sleeve, massage or home remedy before the cause is checked.

Why does it happen and where can it occur?

Lymph vessels are small tubes that carry extra fluid away from tissues. Lymph nodes filter this fluid and are part of the immune system. Surgery to remove nodes, radiotherapy or cancer blocking drainage can reduce fluid flow. Swelling may then develop in the area those vessels drain.

After breast cancer treatment, changes may affect the arm, hand, breast or chest wall. Treatment in the pelvis or groin can affect the legs or genital area. Head and neck treatment can cause swelling around the face or neck, sometimes with problems deeper inside that affect swallowing. Lymphoedema is not limited to a visibly swollen arm.

It is often a long-term condition, but treatment can reduce swelling and discomfort and make everyday activities easier. Do not assume that nothing can be done because treatment finished a long time ago.

What early changes should you notice?

You might first notice that a ring, sleeve, shoe or watch feels tighter. Other changes include heaviness, fullness, aching, less freedom of movement or swelling that varies through the day. Sometimes a feeling of tightness appears before an obvious size difference.

Tell your team where the change is, when it started and whether it is increasing. Mention any skin injury, fever or recent infection. If useful, bring a photograph showing how the area usually looks, but do not delay seeking help while collecting measurements.

For example, “My usual shoe is tight on one side by evening, and the ankle has felt heavy for a week” gives the team more useful information than trying to grade the swelling yourself. Changes in the breast, genital area or neck deserve the same attention as limb swelling.

What happens at an assessment?

The clinician will ask about treatment and symptoms, examine the area and may measure the limb or use other tests. They may investigate for a clot, infection or another cause if the history suggests it. The treatment plan should reflect the diagnosis, skin condition, circulation and your ability to manage care at home.

Ask who will coordinate follow-up: this may be a lymphoedema therapist, physiotherapist or specialist clinic. Explain if you have painful joints, reduced hand strength, numbness or difficulty bending. A plan is only useful if you can put it into practice, with help where needed.

Looking after the skin

Skin care helps reduce cracks and injury through which infection may enter. Wash gently, dry carefully and use a suitable moisturiser. Check the skin regularly, including areas you cannot easily see. Treat small cuts promptly according to the advice you have been given. Ask for help with fungal infections or a wound that is not healing.

Protect skin during tasks such as gardening or washing up. Use footwear that fits and does not rub. Avoid burns, including from hot-water bottles, and protect exposed skin from sunburn. You do not need to stop ordinary activities; adapt tasks that repeatedly injure or irritate the affected area.

If a caregiver helps, agree a simple routine and explain what changes should trigger a call. Avoid vigorous rubbing over fragile skin. New leaking fluid, a rash or damaged skin needs professional advice rather than repeated changes of cream.

Compression needs to fit you

Compression garments or specialist bandaging can support fluid movement and help control swelling. The type, pressure, fit and wearing schedule should be selected after assessment. A sleeve or stocking bought by guessing your size is not an adequate substitute.

Ask someone to show you how to put it on, take it off and care for it. A dressing aid may help if hand strength or bending is difficult. Avoid folds or rolled edges that dig into the skin. Tell the therapist if the garment is uncomfortable, slips or no longer fits as swelling changes.

Remove the garment and contact your team promptly if it causes new pain, numbness, coldness or a colour change. If the area becomes hot, painful or more swollen, or you feel unwell, seek urgent advice. Ask how to manage compression while the cause is assessed.

Can you exercise and use the affected limb?

Usually, yes. Suitable movement supports function and should form part of an individual plan. Research in breast cancer-related lymphoedema supports appropriately adapted exercise; having lymphoedema does not mean you must avoid all lifting or keep the arm still. Evidence varies across body sites and exercise programmes.

Start with an activity you can manage and increase gradually. Walking, comfortable joint movements and tailored strengthening may be useful. Ask whether to wear your prescribed garment during the activity. If swelling, heaviness or pain increases, reduce the activity and discuss the change rather than pushing through it.

Build movement into the day at a pace you can manage. If standing for a long task worsens leg symptoms, try shorter periods or sit for part of it. Divide shopping into lighter loads or ask for help. A physiotherapist can adapt activity if you have numbness, balance problems, cancer affecting the bones or recent surgery.

What about massage, machines or surgery?

Specialist lymphatic drainage uses gentle techniques to help fluid move. It may be included in your treatment plan, but its extra benefit varies. It is different from deep massage. Ask a trained therapist to show you any technique you can safely use yourself.

Compression pumps or surgery may be options in selected circumstances, but they are not necessary or suitable for everyone. A specialist should explain the aim, likely benefit, limitations and ongoing care required. Avoid anyone promising a guaranteed cure. Do not start “water tablets” on your own: they are not routine treatment for lymphoedema itself.

When is swelling urgent?

Skin that becomes hot, painful or more swollen may signal cellulitis, an infection needing urgent treatment. You may also have fever or feel unwell, but do not wait for these symptoms. Redness can be harder to see on brown or black skin.

Sudden swelling or pain in one limb also needs urgent assessment for a blood clot. Chest pain, sudden breathlessness or coughing blood requires emergency care.

New difficulty breathing or rapidly worsening swallowing with head or neck swelling also needs urgent help. Do not wait for a routine lymphoedema appointment when symptoms are changing quickly.

Common questions

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