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Swollen lymph nodes

Definition

Lymph nodes are found throughout your body. They are an important part of your immune system. Lymph nodes help your body recognize and fight germs, infections, and other foreign substances.

The term "swollen glands" refers to enlargement of one or more lymph nodes. The medical name for swollen lymph nodes is lymphadenopathy.

In a child, a node is considered enlarged if it is more than 1 centimeter (0.4 inch) wide.

Alternative Names

Swollen glands; Glands - swollen; Lymph nodes - swollen; Lymphadenopathy

Considerations

Lymph nodes

Watch this video about:
Lymph nodes

Common areas where the lymph nodes can be felt (with the fingers) include:

Causes

Infections are the most common cause of swollen lymph nodes. Infections that can cause them include:

Immune or autoimmune disorders that can cause swollen lymph nodes are:

Cancers that can cause swollen lymph nodes include:

Other cancers may also cause this problem.

Certain medications can cause swollen lymph nodes, including:

Which lymph nodes are swollen depends on the cause and the body parts involved. Swollen lymph nodes that appear suddenly and are painful are usually due to injury or infection. Slow, painless swelling may be due to cancer or a tumor.

Home Care

Painful lymph nodes are generally a sign that your body is fighting an infection. The soreness usually goes away in a couple days, without treatment. The lymph node may not return to its normal size for several weeks.

When to Contact a Medical Professional

Call your doctor if:

What to Expect at Your Office Visit

Your doctor or nurse will perform a physical examination and ask about your medical history and symptoms. Examples of questions that may be asked include when the swelling began, if it came on suddenly, and whether any nodes are painful when pressed.

The following tests may be done:

Treatment depends on the cause of the swollen nodes.

References

Armitage JO. Approach to the patient with lymphadenopathy and splenomegaly. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine. 24th ed. Philadelphia, PA: Elsevier Saunders; 2011:chap 171.

Tower RL, Camitta BM. Lymphadenopathy. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbook of Pediatrics. 19th ed. Philadelphia, PA: Elsevier Saunders; 2011:chap 484.


Review Date: 5/11/2014
Reviewed By: Linda J. Vorvick, MD, Medical Director and Director of Didactic Curriculum, MEDEX Northwest Division of Physician Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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