Why are my lymph nods swollen all the time?

Infection?: You may have an infection or other problem. The only way to get this diagnosed is to go to your doctor and have this examined and diagnosed. Swelling is a sign of a problem. You need to get this addressed as quickly as possible. Today is better than tomorrow.

Monitoring System: The lymphatic system absorbs and carries things too big to go into the arteries and veins like bacteria eaten by white cells and digested food. The lymph nodes "taste" the lymph to see if anything bad is there like bacteria, viruses, cancers, etc. When it detects a problem, it alerts the immune system and your body reacts. They enlarge in response to the inflammation they create when they react.