What causes occipital lymph nodes to swell?

Related questions

1. Can you feel a normal lymph node?
2. Why is there a hard bump on the back of my head?
3. Should you be able to feel lymph nodes in your neck?
4. What size lymph node is abnormal?
5. Can blood test detect lymphoma?
6. Can a scalp infection cause swollen lymph nodes?
7. What causes lymph nodes on back of head to swell?
8. What do occipital lymph nodes do?
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10. Are there lymph nodes in back of head?

Tags

1. #swollen
2. #lymph
3. #groin
4. #weeks
5. #common
6. #symptoms
7. #contagious
8. #several
9. #nodes
10. #often
11. #virus
12. #cause
13. #caused
14. #epstein
15. #particularly
16. #infection
17. #occipital
18. #causes
19. #swelling
20. #under