What is the most common cause of shortness of breath?

Related questions

1. What causes sudden deep breaths?
2. What does dyspnea feel like?
3. Is wheezing life threatening?
4. Is it OK to put water in a nebulizer?
5. Why do I feel the need to keep taking deep breaths?
6. Why am I having trouble breathing all of a sudden?
7. Why do I suddenly have a hard time breathing?
8. Can shortness of breath be a sign of cancer?
9. Why is dyspnea worse at night?
10. How do I know if I have dyspnea?

Tags

1. #altitude
2. #injury
3. #anemia
4. #embolism
5. #allergic
6. #pneumothorax
7. #asthma
8. #pneumonia
9. #reaction
10. #arrhythmia
11. #anaphylaxis
12. #anxiety
13. #failure
14. #subglottic
15. #inhalation
16. #include
17. #stenosis
18. #breath
19. #causes
20. #oxygen
21. #bronchitis
22. #shortness
23. #pulmonary
24. #congestive
25. #heart
26. #disease
27. #lower
28. #cancer
29. #levels
30. #interstitial