Asthma
Asthma affects over 15 million Americans. It is a long lasting disease of the lungs that is often linked to allergies, family history and your surroundings. Asthma makes it difficult to breathe because it can cause inflammation in the bronchial tubes, which carry air to the lungs. The inflammation usually starts slowly, but over time it can make the muscles that line the bronchial tubes tighten and block or narrow the airway, making it difficult to breathe.