What is reactive lymph node?

A reactive lymph node is a lymph node that has become enlarged and active in response to an infection or other inflammatory process. Reactive lymph nodes are often tender and may be accompanied by other symptoms, such as fever, chills, and fatigue.

The most common cause of reactive lymph nodes is an infection, such as a cold or the flu. Other causes can include:

* Autoimmune disorders, such as lupus or rheumatoid arthritis

* Cancer, such as leukemia or lymphoma

* Certain medications, such as antibiotics or anti-inflammatory drugs

* Allergic reactions

* Vaccinations

Reactive lymph nodes typically return to normal size within a few weeks of the inciting event. However, if the lymph nodes remain enlarged for more than 2 weeks, it is important to see a doctor to rule out any underlying medical conditions.

Treatment for reactive lymph nodes is typically supportive and may include:

* Rest

* Pain relievers, such as ibuprofen or acetaminophen

* Antihistamines, to relieve itching or swelling

* Antibiotics, if the cause is a bacterial infection

In some cases, surgery may be necessary to remove a reactive lymph node if it is causing problems, such as pain or pressure on surrounding structures.