Which lymph nodes swell when you have an infection?

When you have an infection, the lymph nodes that are closest to the infection will swell. This is because the lymph nodes are part of the body's immune system, and they help to fight off infection. When the lymph nodes are swollen, it means that they are working hard to fight off the infection.

Some common infections that can cause lymph nodes to swell include:

* Colds and flu

* Strep throat

* Tonsillitis

* Ear infections

* Sinus infections

* Skin infections

* Abscesses

If you have swollen lymph nodes, it is important to see your doctor to find out what is causing the infection. Your doctor may prescribe antibiotics or other medications to help treat the infection.

In most cases, swollen lymph nodes will go down on their own once the infection has been treated. However, if you have swollen lymph nodes that do not go down within a few weeks, it is important to see your doctor again to rule out any other possible causes.