Causes of Swollen Lymph Nodes

3. Abscessed Tooth

An abscessed tooth means you have an infection in your tooth. The bacteria causing such an infection acts on your lymph nodes causing them to swell. You may also notice swelling when you experience problems with your wisdom teeth. There are about 100 different types of bacteria in your mouth at any given time. However, when a tooth becomes infected, bacteria from the tooth are transported continuously through the bloodstream. This bacteria alerts your body's anti-infection defenses, thus causing your swollen lymph nodes. A visit to your dentist is often necessary to remedy an abscessed tooth.