The lymphatic system, made up of lymphoid tissues known as nodes and vessels, is part of the human immune system. It is involved in protecting the body against infection, by delivering immune cells, ...

COVID-19 is a respiratory disease caused by the virus SARS-CoV-2. It commonly causes coughing, fever, and difficulty breathing, but the symptoms can vary widely. Sometimes, COVID-19 may also cause ...

Lymph nodes are located throughout the body. They are small, bean-shaped glands that play a crucial role in the immune system. During an infection, a person may notice swollen lymph nodes. The body ...

Doctors call the lymph nodes in the back area of the skull “occipital lymph nodes.” Swelling of these lymph nodes may occur for various reasons, such as infection and skin conditions, including ...