You reach up to rub your neck and feel it — a tender, slightly swollen lump under your jaw or along the side of your throat. Maybe it appeared overnight. Maybe it’s been there for a few days and you’ve been hoping it would just go away. If you’re wondering whether you need urgent care swollen lymph nodes evaluation, you’re not alone. In fact, it’s one of the more common reasons people walk into a clinic unsure of what’s going on. Moreover, it’s one of the easier things to diagnose when you have the right tests available.
Medically reviewed by Dr. Noah Kojima, MD — Internal Medicine
What Are Lymph Nodes and Why Do They Swell?
Lymph nodes are small, bean-shaped glands that are part of your immune system. You have hundreds of them throughout your body — in your neck, armpits, groin, and abdomen. Their job is to filter lymph fluid and trap bacteria and viruses. When your body is fighting an infection, nearby lymph nodes often swell as immune cells multiply inside them. This is called lymphadenopathy. In most cases, it’s a sign your immune system is doing exactly what it should.
Most of the time, swollen glands are temporary and tied to a specific infection. They shrink back down once your body clears whatever triggered them. However, the concern arises when the swelling is severe, in an unusual location, or simply not going away. That’s when urgent care swollen lymph nodes evaluation is worth pursuing.
Common Causes of Swollen Lymph Nodes
The list of things that can cause swollen lymph nodes is long. However, most cases fall into a handful of familiar categories:
- Strep throat: One of the most frequent culprits. The lymph nodes along your jaw and neck swell in response to the bacterial infection. Additionally, you’ll usually have a sore throat, fever, and sometimes white patches on the tonsils.
- Ear infection: Infections in the middle ear can cause swelling in the lymph nodes just behind or below the ear. Common in kids, but adults get them too. In fact, ear infections are a leading cause of neck node swelling in adults as well.
- Cold and flu: Both upper respiratory viruses cause widespread immune activation. Neck and jaw nodes are often the first to respond. Furthermore, this swelling typically resolves on its own within one to two weeks.
- Mononucleosis (mono): The Epstein-Barr virus causes significant swelling in the neck lymph nodes. It’s often accompanied by extreme fatigue, sore throat, and fever. Notably, it’s not just a “teen illness” — adults get it too.
- Skin infection: A cut, ingrown hair, or localized skin infection near a lymph node can trigger swelling in that drainage region. For example, a small infected wound on your scalp can cause neck node swelling.
- Dental infection: An abscessed tooth or gum infection can cause the lymph nodes under your jaw to swell noticeably. In some cases, the tooth pain isn’t even obvious yet when the swelling appears.
- COVID-19: Both active COVID infection and, in some cases, COVID vaccination can cause temporary lymph node swelling. Specifically, the neck and armpit nodes are most commonly affected.
When Urgent Care Swollen Lymph Nodes Evaluation Makes Sense
You don’t need to rush to urgent care swollen lymph nodes evaluation for every minor bump. However, there are clear situations where getting evaluated the same day is the right call. Head to urgent care in San Leandro if your swollen lymph nodes are accompanied by any of the following:
- A sore throat that makes it hard to swallow or talk
- Fever above 101°F
- Ear pain or pressure
- Significant fatigue that’s keeping you from normal activity
- Swelling that’s getting larger over 24–48 hours
- Redness or warmth over the swollen node
- Swollen nodes in multiple areas of your body at once
These combinations suggest an active infection — often bacterial — that may need treatment. As a result, waiting it out means potentially letting something like a strep infection go untreated. Furthermore, post-streptococcal complications are entirely preventable when you get treated promptly. Therefore, getting seen the same day is the smarter choice.
What Urgent Care Can Actually Do for Swollen Lymph Nodes
This is where an urgent care swollen lymph nodes visit earns its value. A provider doesn’t just look at the node and shrug. Indeed, there are specific, targeted tests that can identify the cause quickly. As a result, you leave knowing what’s happening and what to do about it.
At CityHealth, when you come in with swollen lymph nodes and related symptoms, your provider may order:
- Rapid strep test or throat swab: If your throat is sore and your neck nodes are swollen, a strep culture is often the first test. Results come back in minutes. Treating strep throat at urgent care with antibiotics prevents complications and gets you feeling better faster.
- Mono spot test: If you have significant fatigue, fever, and pronounced neck swelling, a monospot test can detect the Epstein-Barr virus antibodies. This test is quick. Additionally, it helps rule out mono, which requires very different management than bacterial infections — no antibiotics, and no strenuous activity.
- Complete blood count (CBC): A blood draw that measures your white blood cell count. Elevated white cells point to infection. Moreover, certain patterns can suggest viral versus bacterial causes, or flag something that needs further workup.
- Physical exam: Your provider will palpate the lymph nodes to assess size, texture, tenderness, and mobility. Specifically, these physical clues provide diagnostic information that lab tests alone don’t capture.
- Antibiotics, if warranted: If the cause is bacterial — strep, a dental infection, a skin infection — your provider can prescribe the right antibiotic on the spot. Therefore, you don’t need to wait for a primary care appointment.
Warning Signs That Mean the ER, Not Urgent Care
Most swollen lymph nodes are benign and infection-related. However, some presentations are red flags that require emergency evaluation. In particular, certain signs point to conditions beyond a routine infection. Do not wait — go to the ER if you notice:
- A rapidly growing lymph node that doubles in size within a few days
- Rock-hard, fixed nodes that don’t move when you press them
- Night sweats and unexplained weight loss combined with lymph node swelling — this triad is a classic warning sign that something serious may be present
- Painless lymph node swelling that has persisted for more than four weeks without any obvious infection — nodes that don’t hurt and don’t resolve warrant evaluation for lymphoma and other conditions
- Difficulty breathing or swallowing due to swelling in your neck
These symptoms don’t mean the worst. That said, they do mean you need more than urgent care can provide. On the other hand, a provider at urgent care can help triage whether your situation needs escalation. Overall, the above signs should prompt you to seek care without delay.
What to Expect at CityHealth for Swollen Lymph Nodes
CityHealth is a walk-in clinic in San Leandro — no appointment necessary. When you come in with urgent care swollen lymph nodes concerns, here’s how the visit typically goes:
First, you’ll check in, and a medical assistant will take your vitals — temperature, blood pressure, pulse. Next, your provider will ask about how long the nodes have been swollen and whether you have any associated symptoms such as fever, sore throat, or fatigue. They’ll also review your general health history. From there, they’ll examine the nodes and order relevant tests based on what they find. Most results — rapid strep, monospot — come back within the visit. Similarly, if a CBC is ordered, results are typically back within an hour.
If your swelling is tied to a treatable infection, you’ll leave with a diagnosis, a treatment plan, and any prescriptions sent directly to your pharmacy. Additionally, if your presentation raises concerns beyond what urgent care can address, your provider will advise on appropriate next steps — whether that’s an ER referral, imaging, or a specialist visit. Consequently, you’ll never leave without a clear path forward.
The whole visit, from check-in to discharge, typically takes under an hour for straightforward cases.
Frequently Asked Questions
Should I go to urgent care for swollen lymph nodes?
Yes, if the swelling is accompanied by fever, sore throat, ear pain, fatigue, or redness over the node. You should also go if the node is growing quickly or you’ve had swelling for more than two to three weeks without improvement. Urgent care can evaluate, test, and treat most common causes of lymphadenopathy on the same visit. For example, lymph node infection from strep or ear infections can be diagnosed and treated right away. In short, urgent care swollen lymph nodes evaluation gives you answers the same day.
Can urgent care test for swollen lymph nodes?
Yes. Urgent care can run several relevant tests, including a rapid strep test, a monospot test for mononucleosis, and a complete blood count. These tests cover the most common infectious causes of swollen lymph nodes. Furthermore, they can often provide a diagnosis within the same visit. However, urgent care cannot perform imaging or biopsy — those require specialist referral if the initial workup doesn’t explain the swelling. For more information, the Mayo Clinic’s guide to swollen lymph nodes is a reliable reference.
How long do swollen lymph nodes last?
It depends on the cause. Nodes swollen from a cold or minor viral infection typically return to normal within one to two weeks. Bacterial infections treated with antibiotics often show improvement within a few days of starting treatment. On the other hand, mono can cause lymph node swelling that lingers for several weeks. Nodes that remain swollen for more than four weeks, or that continue growing, should be evaluated regardless of whether they’re tender.
Walk In Today — No Appointment Needed
Swollen lymph nodes are your body’s way of telling you something is going on. In most cases, it’s manageable and treatable. However, you shouldn’t have to guess. At CityHealth urgent care in San Leandro, you can walk in any day of the week, get examined, get tested, and leave with answers. Additionally, if your swollen glands have been bothering you — especially with a fever, sore throat, or ear pain — don’t put it off.
