Some people who recently got a booster dose of Covid-19 vaccine are noticing swollen lymph nodes. Don’t panic, doctors say. Swollen lymph nodes caused by vaccination are temporary, harmless and a sign ...

Lymph nodes are small (about 1-2 centimeters around or the size of a couple of AAA batteries side by side) oval or kidney-shaped structures that are a part of your immune system. They're part of your ...

A swollen lymph node can be a bit like your body’s version of a red flag: When one of these bean-shaped clusters of immune cells in your neck, armpit, or groin puffs up, it’s typically an indication ...