When should I be concerned about swollen lymph nodes?

Related questions

1. How do you treat swollen lymph nodes in neck?
2. What can cause lymph nodes to swell?
3. What does it mean when only one lymph node is swollen?
4. Can you die from lymph node cancer?
5. Is it normal for lymph nodes to stay swollen?

Tags

1. #continue
2. #enlarge
3. #concerned
4. #doctor
5. #reason
6. #nodes
7. #apparent
8. #rubbery
9. #swollen
10. #weeks
11. #lymph
12. #present
13. #appeared