Lymph nodes are small, bean-shaped structures located throughout the body. Their function is to filter lymphatic fluid, which plays an essential role in the immune system. Inflamed or swollen lymph nodes can be a sign that something is wrong in the body.

In this article, we will discuss seven possible reasons for inflamed lymph nodes in pictures.

Bacterial Infections

Bacterial infections can cause swollen lymph nodes. Common examples include strep throat, tonsillitis, tuberculosis, and sexually transmitted infections such as syphilis and gonorrhea.

Symptoms may include fever, pain, and tenderness in the affected area.

Viral Infections

Viruses such as the common cold, flu, and mononucleosis can cause swollen lymph nodes in the neck, armpits, and groin. Other symptoms may include fever, headache, and fatigue.

The lymph nodes typically return to their normal size once the infection has cleared.

Fungal Infections

Fungal infections such as histoplasmosis and coccidioidomycosis can lead to swollen lymph nodes. These infections are typically acquired by inhaling airborne spores. Symptoms may include fever, cough, and shortness of breath.

Autoimmune Disorders

Autoimmune disorders such as lupus, rheumatoid arthritis, and Sjogren’s syndrome can cause swollen lymph nodes. These conditions occur when the immune system mistakenly attacks healthy tissues in the body.

Other symptoms may include joint pain, fatigue, and muscle weakness.

Cancers

Certain types of cancers can cause swollen lymph nodes. These include lymphoma, leukemia, and breast cancer. In some cases, the lymph nodes may be the first sign that cancer has spread from its original site to other parts of the body.

Medications

Some medications can cause swollen lymph nodes as a side effect. These include anticonvulsants, antibiotics, and nonsteroidal anti-inflammatory drugs (NSAIDs). If you suspect that a medication is causing your lymph nodes to swell, speak with your doctor.

Other Causes

Other possible causes of swollen lymph nodes include hyperthyroidism, sarcoidosis, and Kawasaki disease. In some cases, the cause may be unknown.

Conclusion

Inflamed or swollen lymph nodes can be a sign that something is wrong in the body.

There are many possible reasons for inflamed lymph nodes, including bacterial and viral infections, fungal infections, autoimmune disorders, cancers, medications, and other causes. If you have persistent swelling or other concerning symptoms, speak with your doctor.