Medically reviewed by Doru Paul, MD Swollen lymph nodes in your neck, armpit, head, and other parts of the body often occur when your body is fighting an infection or disease. Lymph nodes filter ...

Treatment can depend on the underlying cause. You have hundreds of small, oval- or bean-shaped lymph nodes (also known as lymph glands) throughout your body. Preauricular lymph nodes are in front ...

The lymph nodes in your neck and other parts of your body can be swollen for years, but this does not always mean it is a sign of cancer. You might have a common cold, throat infection, or another ...

A cancerous lump will often grow and change in shape or color over time. It may be firm to the touch and fixed in place if a person tries to move it. An enlarged posterior auricular lymph node ...

The lymph nodes are tiny, kidney-shaped structures that act as filters in this system. They trap and kill viruses, bacteria, and fungi before these pathogens can return to the bloodstream.

If you've been hopping between arms for booster shots, a new study suggests that your lymph nodes remember exactly where you first got jabbed and perform far better when you return to that same arm.