Allergies can sometimes cause swollen lymph nodes along with other allergy symptoms. They can become large and painful and lead to a sinus infection if left untreated.

Reactive lymph nodes occur when nodes swell in the body, usually due to infection or injury. Symptoms include swelling, fever, and tenderness. Treatment depends on the cause. Learn more here.

Learn more about where breast cancer could metastasize, to prepare you for conversations with your doctor.

The axillary region—the underarm area containing lymph nodes that drain the breast—deserves particular attention during any breast assessment.

Lymph nodes play a crucial role in filtering harmful substances from the body. Swelling in the armpit or collarbone area, even in the absence of a breast lump, may indicate that cancer cells have ...

The age-old technique has caught the attention of TikTok – but experts say that it really is a fast track to glowier, healthier-looking skin ...

“A less common cause of swollen lymph glands in the armpit is breast cancer that has spread to this area.” Pain in the area could also signal the disease.

Cancer Research UK identifies "a new lump" or "thickening" in the armpit as a symptom to watch out for, which can be caused by swollen lymph nodes.

Lymph nodes throughout the body may become swollen due to illness. Discover the symptoms, learn about diagnosis, and get tips on prevention.