Swollen lymph nodes: which doctor to see
Lymph nodes are the immune system's "sentry posts": they enlarge in response to infections and usually shrink back within a couple of weeks. If a node keeps growing, is firm and painless, or persists longer than 2–3 weeks, see a general practitioner.
Common causes
- A response to infections — colds, sore throat, dental problems
- Skin infections near the node, including animal scratches
- Viral infections with long-lasting node enlargement (mononucleosis)
- A vaccine reaction
- More rarely — blood diseases and tumors, which is why persistent enlargement gets checked
When to seek urgent help
Do not wait for a scheduled visit if you have any of these signs:
- A node over 2 cm, firm, fixed and growing
- Enlarged nodes with night sweats and weight loss
- A node with redness, severe pain and fever — possible suppuration
- Nodes enlarged in several areas at once
- Nodes above the collarbone — these always get checked
Ambulance: 103 (103 from a mobile) · Unified rescue service: 911
Your specialist
General practitioner
What to bring to the visit
- A timeline: when you noticed the node, whether it is growing
- Details of recent infections, animal scratches, travel
- Blood test results, if you have them
- A list of medicines you take
Frequently asked questions
Can I warm up a swollen lymph node?
No: with inflammation, warming can speed up suppuration. Until a doctor examines you, do not warm or massage the nodes.
What tests are usually ordered?
It starts with an examination, a complete blood count and, if needed, an ultrasound of the node. Further steps depend on the results.
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The information on this page is for reference only and does not replace a doctor's consultation. Only a doctor can make a diagnosis in person. If your condition worsens, call 103.