What causes a sudden drooping eyelid?

Related questions

1. Does Medicare pay for droopy eyelid surgery?
2. Can Bell's Palsy affect your eyesight?
3. How do I stop sleeping with my eyes half open?
4. What causes double eyelid?
5. What is a double eyelid?
6. Why is one eyelid smaller than the other?
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Tags

1. #vision
2. #senile
3. #aponeurotic
4. #common
5. #drooping
6. #cover
7. #interfere
8. #ptosis
9. #related
10. #affect
11. #present
12. #cases
13. #severe
14. #aging
15. #pupil
16. #birth
17. #cause
18. #eyelid