A tender, movable lump in the neck, under the jaw, in the armpit, or in the groin is almost always a swollen lymph node responding to a nearby infection — a cold, sore throat, ear or skin infection. These usually shrink back to normal over 2 to 4 weeks as the infection clears. For adults with an obvious nearby infection, a clinician can review your symptoms online, treat the cause when appropriate, and tell you what to watch for.
Seek prompt care if: a node is hard and fixed in place, larger than about 2 cm and growing, accompanied by unexplained weight loss, drenching night sweats, or trouble breathing or swallowing, or the overlying skin is red, hot, and spreading.
See a clinician nowWhat swollen lymph nodes actually are
Lymph nodes are small, bean-shaped glands scattered throughout the body — especially in the neck, under the jaw, in the armpits, and in the groin. They filter lymph fluid and house immune cells. When you fight an infection, the nodes nearest the source fill with active immune cells and swell, which is why they often feel tender and movable. This is a normal, healthy response.
Most swelling is reactive — a direct response to a nearby infection like a sore throat, cold, ear infection, dental problem, or skin infection. Less commonly, generalized swelling can come from viral illnesses like mono, some medications, autoimmune conditions, or, rarely, a blood or lymphatic cancer. The history and pattern usually make the likely cause clear.
What it feels like — common signs
If these describe what you're experiencing and you have no red flags, telehealth is a reasonable next step:
What to do right now
If your swollen node came on with a cold or sore throat and feels tender and movable, supportive care is usually all that's needed while it settles:
- Treat the underlying illness — rest, fluids, and over-the-counter pain relief for the cold or sore throat driving it.
- Use a warm compress on a tender node for comfort.
- Take acetaminophen or ibuprofen for soreness if appropriate for you.
- Don't squeeze or repeatedly poke the node — that only keeps it irritated.
- Track it — note the size and whether it's shrinking over the days after the infection clears.
A tender, movable node that came with a cold is your immune system working — the lump to worry about is one that's hard, fixed, and quietly growing.
How a clinician can help online
For adults with tender, movable nodes alongside a clear nearby infection, telehealth works well. A clinician reviews your symptoms, where the node is, how long it's been there, and any other complaints, then treats the underlying cause — for example, antibiotics for strep throat or a skin infection — and advises on what to monitor. If the picture suggests something that needs hands-on examination or imaging, they'll point you to the right next step.
Telehealth is NOT the right path for: a hard, fixed, painless node that's growing; swelling lasting more than a month without explanation; nodes with unexplained weight loss or night sweats; rapidly spreading redness over the node; or any difficulty breathing or swallowing — these need in-person evaluation, and sometimes imaging or a biopsy.
How swollen lymph nodes are treated
There's no treatment for the node itself — care is aimed at the cause. A bacterial infection like strep throat or a skin infection is treated with antibiotics; viral causes are managed with supportive care while they resolve. Persistent or unexplained swelling is worked up with blood tests, imaging, or referral. As the underlying problem clears, the node gradually returns to its normal size.
How long does it last?
When the cause is an everyday infection, the node usually begins to shrink within a week or two of the illness clearing and returns to normal over 2 to 4 weeks. A node that hasn't improved after about a month, or that keeps enlarging, should be examined in person to rule out a less common cause.
Frequently asked questions
When should I worry about swollen lymph nodes?
Most nodes from a cold or sore throat are harmless and shrink within 2 to 4 weeks. See a clinician if a node is hard and fixed, over about 2 cm and growing, or comes with unexplained weight loss, night sweats, or lasts more than a month.
What causes them?
Most often a nearby infection like a cold, sore throat, ear or dental problem, or skin infection. Less common causes include mono, some medications, autoimmune conditions, and rarely cancers like lymphoma.
Can they be evaluated online?
Yes. For adults with tender, movable nodes alongside a clear infection, a clinician can review your symptoms online, treat the cause when appropriate, and advise on monitoring. Warning-sign nodes are referred in person.
How long do they last?
From an everyday infection, nodes usually shrink within a week or two of the infection clearing and normalize over 2 to 4 weeks. A node that persists beyond a month should be checked.
Do they mean cancer?
Usually not. The large majority are from infection and resolve on their own. A hard, fixed, painless node that keeps growing, or swelling with weight loss and night sweats, should be evaluated promptly.
