Summer is often associated with outdoor activities, vacations, and warmer weather, but for millions of people, it also means the return of seasonal allergies. Increased pollen from grasses, weeds, or other plants can trigger uncomfortable symptoms like sneezing, congestion, itchy eyes, and a runny nose. But what about swollen lymph nodes? If you’ve noticed tender lumps in your neck or under your jaw during allergy season, you may wonder whether your allergies are to blame. The answer is sometimes summer allergies can contribute to swollen lymph nodes, but they are not the most common cause. Lymph nodes typically become enlarged when your immune system is responding to inflammation or infection. Understanding why lymph nodes swell, how allergies may play a role, and when symptoms require attention can help you determine your next steps.
For a same-day evaluation and treatment plan, visit the walk-in clinic at AFC Urgent Care Denver Sloan's Lake. Our center is conveniently located at 3790 W. Colfax Ave in Denver, CO. Just walk in or plan your visit in advance by booking below!
Why Do Lymph Nodes Swell?
Lymph nodes are small, bean-shaped structures that are part of your immune system. They help filter harmful substances and contain immune cells that fight infections and respond to inflammation. When your body detects a potential threat, lymph nodes may become larger as immune cells become more active. This is why swollen lymph nodes are common when you’re sick. Common causes of swollen lymph nodes include:
- Viral infections, such as the common cold or flu
- Bacterial infections, such as strep throat or sinus infections
- Ear infections
- Dental infections
- Skin infections
- Certain inflammatory conditions
Swollen lymph nodes are usually a sign that your immune system is doing its job.
Can Seasonal Allergies Cause Swollen Lymph Nodes?
Although swollen lymph nodes are more commonly associated with infections, severe or prolonged allergy symptoms may sometimes contribute to mild lymph node swelling. When you have seasonal allergies, your immune system reacts to normally harmless substances like pollen by releasing chemicals such as histamine. This causes inflammation in the nose, sinuses, and throat. That ongoing inflammation may lead to nearby lymph nodes becoming slightly enlarged, especially those located:
- Under the jaw
- Along the side of the neck
- Behind the ears
However, allergy-related lymph node swelling is typically:
- Mild
- Soft or slightly tender
- Temporary
- Associated with other allergy symptoms
How Can You Tell If Swollen Lymph Nodes Are From Allergies
It can sometimes be difficult to tell the difference between allergies and an infection because they can share similar symptoms. Paying attention to what symptoms occur together can provide clues. Swollen lymph nodes may be related to allergies if you also have:
- Sneezing
- Itchy or watery eyes
- Clear nasal drainage
- Scratchy throat
- Postnasal drip
An infection may be more likely if you experience fever, body aches, thick mucus, severe sore throat, ear pain, and worsening sinus pressure.
When Should You Visit Urgent Care?
While swollen lymph nodes are often harmless, certain signs should be evaluated by a healthcare provider. Visit an urgent care center if you have:
- Swollen lymph nodes that last more than 2 weeks
- Rapidly growing lymph nodes
- Significant pain or tenderness
- A fever along with swollen lymph nodes
- Difficulty swallowing
- Severe sore throat
- Symptoms that are getting worse instead of better
An urgent care provider can examine your lymph nodes, review your symptoms, and determine whether allergies, an infection, or another condition may be causing the swelling. They can provide treatment recommendations, perform testing if needed, and help you find relief.
Visit AFC Urgent Care Denver Sloan’s Lake For Same-Day Testing & Treatment
Summer allergies can sometimes contribute to swollen lymph nodes because they trigger inflammation and activate your immune system. However, swollen lymph nodes are more commonly caused by infections, so it’s important to consider your other symptoms when determining the cause. If your swollen lymph nodes occur alongside typical allergy symptoms, managing your allergies may help reduce the swelling. But if the swelling persists or shows signs of infection, don’t hesitate to seek care. If you’ve been experiencing summer allergy symptoms or swollen lymph nodes, come visit the walk-in clinic at AFC Urgent Care Denver Sloan’s Lake. We can diagnose your condition and provide the treatment needed to help you recover as quickly as possible. Visit us today or call us directly at (303) 480-1000 with questions.