Conditions list medically reviewed by George Krucik, MD, MBA
Premenstrual syndrome causes a wide variety of emotional and physical symptoms. Learn more about it.
Smoking is the leading cause of emphysema, a disease of the lungs that makes it hard to breathe. Learn more about how emphysema affects you and how it's treated.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.