Swollen lymph nodes in children, not infrequently cause question marks to parental panic. Keep in mind, lymph nodes are part of the immune system. Swelling that occurs, often a sign that the child is infected with a virus or bacteria. Lymph nodes are shaped like beans. Among them are in the groin, armpits, and neck. This gland works with lymph fluid and nutrients and substances that are not used anymore. Lymph nodes include part of the body's defense against various causes of infection. When a child is infected with a virus or bacteria, the lymph nodes filter out lymph fluid, trapping viruses or bacteria that interfere, to then be destroyed by white blood cells. Causes of swelling Swollen lymph nodes, including in children, are generally caused by infections, such as colds or flu, ear infections, sinus infections, dental infections, skin infections or sore throats. There are several drugs and allergic reactions to drugs that can cause swollen lymph nodes. Including, anti-sei...