Swollen Glands: Why Lymph Nodes Swell and When to Worry
Found a tender lump in your neck, armpit, or groin during a cold? Swollen lymph nodes are usually your body fighting infection and settle on their own. A calm guide to what is normal and what is not.
You feel a tender little lump under your jaw during a sore throat, or in your armpit or groin, and the worry sets in. Here is the reassuring truth: those lumps are usually lymph nodes doing their job — swelling up as your body fights a nearby infection — and they settle down once you recover. Most swollen glands are completely harmless. This is a calm, plain-language guide to why they swell, what is normal, and the less common signs worth getting checked.
What Lymph Nodes Actually Do
Lymph nodes are small, bean-shaped filters scattered through the body — clustered in places like the neck, armpits, and groin — and they are a key part of your immune system. When they detect an infection nearby, they swell as immune cells gather to fight it. So a swollen, tender node during a cold or throat infection is a sign your defences are working, not a sign something is wrong.
The Reassuring (Common) Pattern
- Comes up with an infection (cold, sore throat, ear/skin infection, dental issue)
- Tender and soft, and movable under the skin
- A few centimetres or less
- Slowly settles over days to a couple of weeks as you recover
The Signs Worth Getting Checked
These features are less common, but they are exactly what a doctor wants to assess rather than wait on.
What to Do in the Meantime
- If it is with a mild infection, treat that (rest, fluids) and the node usually settles
- A warm compress can soothe a tender node
- Do not keep prodding or squeezing it — that just irritates it
- Keep an eye on whether it is shrinking or growing over the next couple of weeks
When to See a Doctor
Most swollen glands settle on their own with the infection that caused them. See a doctor if a node is hard, fixed, painless and growing, lasts beyond a few weeks, or comes with weight loss, night sweats, or a lasting fever — these deserve a proper check. If you simply want reassurance about a lump, an online consultation (with a description and photo) is a quick way to find out whether it can be watched or should be examined in person. When in doubt about any lump, getting it checked is always the right move — most often for peace of mind.