Lymph node swelling in older adults

Overview

Lymph nodes are small, bean-shaped glands that help your body fight infections. When they swell, it often means your immune system is working to fight something off. In older adults, swollen lymph nodes can be caused by infections, but also by other conditions that are more common with age.

Yes, lymph node swelling is common in older adults, especially when they have an infection. However, because the immune system changes with age, the cause may sometimes be different from younger people.

It affects people over the age of 65, though it can happen at any age. In older adults, the immune system may not respond as quickly, so swelling might be less obvious or take longer to go away.

Symptoms

Common symptoms

• A lump or swelling under the skin, often in the neck, armpit, or groin.
• The lump may feel tender or painful when you touch it.
• The skin over the lump may be red and warm.

Symptoms in children

• This article focuses on older adults. In children, swollen lymph nodes are usually due to common infections like colds and ear infections, and they often go away on their own.

Symptoms in older adults

• The swelling may be less noticeable because the skin is thinner or the lymph node is deeper.
• Older adults may not have a fever even if there is an infection.
• Swollen lymph nodes that are hard, fixed (not moving when pushed), or growing over time need immediate medical attention.

Causes

Main causes

• Infections like colds, flu, tonsillitis, or skin infections.
• Medications (some can cause lymph node swelling as a side effect).
• Immune system conditions such as rheumatoid arthritis or lupus.
• Cancer, including lymphoma or leukaemia, though this is less common.

Risk factors

• Weakening immune system due to age or chronic illness (like diabetes).
• Having a family history of immune disorders or certain cancers.
• Using medications that suppress the immune system (like steroids or biologics).
• Exposure to infections, such as tuberculosis or shingles.

When to see a doctor

See a doctor urgently if:

• If the swelling does not go away after 2-4 weeks.
• If the lymph node is hard, fixed in place, or growing larger.
• If you have unexplained fever, weight loss, or night sweats.

Book a routine appointment if:

• If you have a mild infection and the swelling is tender but not worrying, it is fine to wait a week and see your GP if it persists.
• If you notice a new lump that is not going away, make a routine appointment.
• If you have a chronic condition like rheumatoid arthritis and notice new swelling.

Diagnosis

Your doctor will ask about your symptoms and examine the swollen node. They will check its size, texture, and whether it moves. They may also examine other nodes in your body. Based on that, they may order tests to find the cause.

Tests that may be done

• Blood tests to look for signs of infection or immune system activity.
• Ultrasound scan to see the detailed structure of the node.
• CT scan or MRI if the node is deep inside the body.
• Biopsy (taking a small sample of the node) to check for cancer or other serious conditions.

What to expect at your appointment

You will likely have a physical exam first. If needed, the doctor will explain any tests and why they are recommended. Most tests are not painful, though a biopsy may be done under local anaesthetic. Results can take a few days to a week.

Treatment

Treatment depends on the cause. If it is an infection, treating the infection usually makes the swelling go down. For immune conditions, medication may help. If cancer is found, a specialist will discuss the best plan, which may include monitoring, radiation, or other treatments.

Self-care at home

• Rest and drink plenty of fluids.
• Apply a warm, damp cloth to the swollen area to ease discomfort.
• Do not squeeze or poke the lump.
• Take paracetamol or ibuprofen (if safe for you) for pain or fever – check with your pharmacist or doctor first.

Medical treatments

If an infection is the cause, your doctor may prescribe antibiotics or antiviral medication. For immune-related conditions, they might use medications that calm the immune system. If cancer is involved, treatment may include chemotherapy, radiation, or immunotherapy – your specialist will explain the options.

When is surgery considered?

Surgery is rarely needed for lymph node swelling alone. It may be used to remove a node for biopsy, or to treat some types of cancer that have spread to lymph nodes. Your doctor will discuss this if it applies.

Living with this condition

If you have ongoing lymph node swelling, it is important to monitor it. Check the size and feel of the node regularly. Keep a diary of any other symptoms like fever or tiredness. Follow your doctor's advice and attend all follow-up appointments.

Lifestyle tips

• Get plenty of rest and avoid overexertion, especially if you have an infection.
• Keep up good hygiene to avoid infections – wash hands often, get recommended vaccines.
• Avoid touching or massaging the swollen node unnecessarily.

Diet and exercise

Eat a balanced diet rich in fruits, vegetables, and protein to support your immune system. Gentle exercise like walking or stretching can help you stay well, but rest when you feel tired.

Mental health and emotional wellbeing

Worrying about a swollen lymph node can be stressful, especially if the cause is not clear. It is normal to feel anxious. Talk to your doctor about your concerns – they can explain what to expect. If you feel overwhelmed, ask about counselling or support groups.

Prevention

Not all causes can be prevented, but you can reduce your risk of infections that often cause lymph node swelling. Practice good hygiene, avoid close contact with sick people, and stay up to date with vaccinations.

Vaccines

Get the flu vaccine every year and other vaccines recommended for your age, such as the shingles vaccine and pneumococcal vaccine. Ask your doctor which vaccines are right for you.

Screening programmes

There is no routine screening for lymph node swelling. If you have a condition that increases your risk (like HIV or an autoimmune disease), your doctor may monitor your lymph nodes during check-ups.

Complications

If left untreated

• An infection in the node itself (abscess) that may need drainage.
• If the cause is cancer, delayed diagnosis can mean the cancer spreads.
• Pressure on nearby structures if the node is very large (rare).

Long-term outlook

The outlook depends on the cause. Most swollen lymph nodes are due to minor infections and resolve completely. Even when the cause is more serious, early detection and treatment often lead to good outcomes. Your doctor will guide you through the next steps, and many people get better with proper care.

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