Which Doctor Evaluates Swollen Lymph Nodes?

Medically reviewed by Dr. Alex Movshis, MD Last reviewed March 2026

Swollen lymph nodes (lymphadenopathy) are enlarged glands indicating immune system response to infection or other conditions.

Swollen lymph nodes are typically a sign that your body is fighting an infection like a cold, flu, or strep throat. You can feel them as tender lumps under your chin, in your neck, or under your arm. Most swollen lymph nodes from infection shrink back to normal size within 2-4 weeks as your body recovers. However, lymph nodes that persist for more than four weeks, are larger than a half-inch, or feel hard and fixed to surrounding tissue warrant evaluation since these can signal more serious conditions. Understanding what kind of doctor should I see for swollen lymph nodes helps you get appropriate evaluation.

Start with your primary care physician who can examine your nodes, assess for infection symptoms, and recommend appropriate tests. If nodes are from a simple infection, they'll gradually improve with rest and supportive care. Your doctor can perform blood tests or imaging to help identify the cause. An infectious disease specialist evaluates persistent swollen nodes potentially from unusual infections. A hematologist or oncologist evaluates concerning node characteristics that might suggest blood cancer or lymphoma. Most swollen nodes from common infections require no special treatment beyond treating the underlying infection.

You should seek prompt evaluation if swollen nodes are accompanied by high fever, night sweats, unexplained weight loss, or don't improve within 4 weeks. Early evaluation identifies treatable infections and catches concerning conditions when treatment is most effective.

Which Specialist Should You See?

Primary Care Physician

Evaluates swollen nodes and determines if investigation is needed

When to see: For initial evaluation of swollen lymph nodes

Oncologist

Evaluates malignant causes of lymphadenopathy if suspected

When to see: For evaluation of persistent or concerning swollen nodes

Infectious Disease Specialist

Evaluates infectious causes of swollen lymph nodes

When to see: For investigation of persistent swollen nodes

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When to Seek Emergency Care

  • Swollen nodes larger than 2 cm or rapidly enlarging
  • Swollen nodes persisting more than 4 weeks
  • Nodes with fever and weight loss
  • Hard, fixed, non-tender nodes
  • Difficulty swallowing from swollen neck nodes

If you're experiencing any of these, call 911 or go to your nearest emergency room.

Frequently Asked Questions

What causes swollen lymph nodes?+
Causes include viral infections, bacterial infections, mononucleosis, and sometimes cancer.
When should I be concerned about swollen lymph nodes?+
Be concerned if nodes are large (>2 cm), hard, persistent (>4 weeks), accompanied by fever, or if you have unexplained weight loss.
How are swollen nodes diagnosed?+
Doctors perform physical examination and imaging (ultrasound or CT). Biopsy may be needed if malignancy is suspected.

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Medically Reviewed

This content has been reviewed and approved by Dr. Alex Movshis, MD, a board-certified physician.

Last reviewed: March 2026