Swollen glands - Causes, Treatment & When to See a Doctor

What is Swollen Glands?

Swollen glands, also known as lymphadenopathy, refer to an enlargement of the lymph nodes. Lymph nodes are small, bean‑shaped structures that are part of the body’s immune system. They filter fluid (lymph) and trap bacteria, viruses, and other foreign particles, helping the body fight infection.

When a node becomes enlarged, it can feel tender or firm and may be visible under the skin in areas such as the neck, under the jaw, behind the ears, in the armpits, or in the groin. Swelling can be temporary—often a sign that the immune system is doing its job—or it can indicate a more serious underlying condition.

Common Causes

Most cases of swollen glands are benign and related to infections, but a variety of other conditions can also cause lymphadenopathy. Below are the most frequent culprits:

• Upper‑respiratory infections (common cold, influenza, sinusitis)
• Streptococcal or staphylococcal throat infections (including strep throat)
• Mononucleosis (caused by Epstein–Barr virus)
• Dental problems (abscesses, severe gum disease)
• Skin infections (cellulitis, impetigo)
• Viral illnesses such as HIV, cytomegalovirus, or COVID‑19
• Autoimmune diseases (lupus, rheumatoid arthritis)
• Certain cancers (lymphoma, leukemia, metastatic solid tumors)
• Medications that trigger a hypersensitivity reaction (e.g., phenytoin, allopurinol)
• Rare conditions such as sarcoidosis or Kikuchi disease

Associated Symptoms

The presence of other signs can help pinpoint the cause of swollen glands. Common accompanying symptoms include:

• Fever or chills
• Sore throat or difficulty swallowing
• Runny nose, cough, or congestion
• Hoarseness or ear pain
• Fatigue or general malaise
• Night sweats
• Weight loss (unexplained)
• Pain or tenderness in the affected area
• Redness or warmth over the node (suggests infection)
• Itching or rash nearby

When to See a Doctor

While many swollen glands resolve on their own, you should seek medical evaluation if any of the following occur:

• Swelling persists longer than 2–3 weeks without improvement
• Lymph nodes are **hard, fixed, or non‑tender**
> 5 cm in size or continue to **grow rapidly**
• Accompanied by **high fever** (> 101 °F / 38.3 °C) that doesn’t respond to over‑the‑counter medication
• Unexplained **weight loss**, night sweats, or persistent fatigue
• Difficulty breathing, swallowing, or severe pain
• Recent exposure to someone diagnosed with tuberculosis or HIV
• History of cancer or a weakened immune system (e.g., organ transplant, chemotherapy)

Diagnosis

Evaluating swollen glands typically involves a stepwise approach:

1. Medical History & Physical Examination

The clinician will ask about recent infections, travel, medication use, and any systemic symptoms. A thorough neck, ear, throat, chest, and abdominal exam helps locate which nodes are involved and assesses their size, consistency, and mobility.

2. Laboratory Tests

• Complete blood count (CBC) – looks for infection or blood‑cancer clues.
• Erythrocyte sedimentation rate (ESR) / C‑reactive protein (CRP) – markers of inflammation.
• Rapid strep test or throat culture – for bacterial sore throat.
• Viral serologies (EBV, HIV, CMV, COVID‑19) if a viral cause is suspected.
• Autoimmune panels (ANA, rheumatoid factor) when autoimmune disease is considered.

3. Imaging

• Ultrasound – non‑invasive, can differentiate cystic vs. solid nodes.
• CT or MRI – used when deeper neck structures or chest nodes need assessment.

4. Tissue Sampling

If the cause remains unclear, especially when cancer is a concern, a doctor may perform:

• Fine‑needle aspiration (FNA) – a thin needle extracts cells for cytology.
• Core needle biopsy – provides a larger tissue sample.
• Excisional biopsy – surgical removal of the entire node, usually done by an ENT or general surgeon.

Treatment Options

Treatment depends on the underlying cause. General strategies include:

1. Addressing Infections

• Viral infections – usually self‑limited; rest, hydration, and analgesics (acetaminophen or ibuprofen) relieve discomfort.
• Bacterial infections – appropriate antibiotics (e.g., penicillin for strep throat, clindamycin for skin abscesses).
• Dental abscesses – dental drainage and antibiotics.

2. Anti‑Inflammatory & Pain Relief

Over‑the‑counter NSAIDs can reduce swelling and pain. Warm compresses applied 2‑3 times daily may also help.

3. Treating Autoimmune Conditions

When an autoimmune disease is responsible, disease‑modifying agents (e.g., hydroxychloroquine for lupus, methotrexate for rheumatoid arthritis) and short courses of steroids may be prescribed.

4. Cancer‑Related Management

Oncologic treatment—chemotherapy, radiation, targeted therapy, or surgical removal—depends on the type and stage of malignancy. Early referral to a hematologist/oncologist is essential.

5. Supportive Care

• Stay well‑hydrated.
• Maintain a balanced diet rich in vitamins (A, C, D, zinc) to support immune function.
• Get adequate sleep (7‑9 hours/night).
• Avoid tobacco and limit alcohol, as both can impair immune response.

Prevention Tips

While you cannot control all causes, many steps can reduce the risk of developing swollen glands:

• Practice good hand hygiene; wash hands regularly with soap for at least 20 seconds.
• Stay up‑to‑date on vaccinations (influenza, COVID‑19, HPV, meningococcal, etc.).
• Address dental problems promptly; schedule routine dental cleanings.
• Avoid sharing personal items (e.g., toothbrushes, drinking glasses) that can spread infections.
• Use condoms and get regular STI screenings to reduce risk of HIV and other viral infections.
• Manage chronic conditions (diabetes, asthma) to keep the immune system strong.
• Limit exposure to known irritants (smoke, chemical fumes) that can provoke respiratory infections.
• Maintain a healthy weight and engage in regular moderate‑intensity exercise (150 min/week).

Emergency Warning Signs

References

• Mayo Clinic. “Lymphadenopathy.” mayoclinic.org. Accessed April 2026.
• Centers for Disease Control and Prevention. “Epstein-Barr Virus (EBV) & Infectious Mononucleosis.” cdc.gov. Accessed April 2026.
• National Institutes of Health. “Lymphoma Treatment (PDQ®)–Patient Version.” nih.gov. Accessed April 2026.
• Cleveland Clinic. “Swollen Lymph Nodes: Causes, Diagnosis, and Treatment.” clevelandclinic.org. Accessed April 2026.
• World Health Organization. “Guidelines for the Management of Tuberculosis.” who.int. Accessed April 2026.