Swollen lymph nodes, also known as swollen glands, are a common symptom of various medical conditions. Lymph nodes are part of the immune system and are located throughout the body. They help filter out harmful substances, such as bacteria and viruses, and produce immune cells that help fight infections.
Swollen lymph nodes can occur in any part of the body but are most commonly felt in the neck, armpits, and groin. They may be tender or painful to the touch and can vary in size. Depending on the underlying cause, other symptoms may also be present, such as fever, fatigue, or a sore throat.
The most common cause of swollen lymph nodes is an infection, such as a cold, flu, or ear infection. However, other medical conditions, including autoimmune diseases, cancer, and medication side effects, can also cause lymph nodes to become swollen.
Causes of Swollen Lymph Nodes