Why Do Lymph Nodes Become Swollen?
Lymph nodes are tiny capsules, about the size of a pea or small bean that are filled with the cells that help protect the body from illness, which are types of white blood cells called macrophages and lymphocytes. When you get ill, these cells go into action to fight disease, and the lymph nodes may swell due to presence of disease or abnormal tissue in the lymph nodes. There are actually several reasons why lymph nodes become swollen, and many conditions that can cause painful swollen nodes. Which lymph nodes become swollen can sometimes help track which diseases are creating the problem.
