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BookmarkAsthma is a disease of the human respiratory system in which the airways narrow, often in response to a "trigger" such as exposure to an allergen, cold air, exercise, or emotional stress.
This narrowing causes symptoms such as wheezing, shortness of breath, chest tightness, and coughing, which are the hallmarks of asthma..
For more information about the topic Asthma, read the full article at Wikipedia.org, or see the following related articles:
Wheeze — A wheeze is a continuous, coarse, whistling sound produced in the respiratory airways during ... > read more
Emphysema — Emphysema is a chronic lung disease. It is often caused by exposure to toxic chemicals or long-term exposure to tobacco smoke. Emphysema is ... > read more
Bronchitis — Bronchitis is an obstructive pulmonary disease characterized by inflammation of the bronchi of the lungs. Bronchitis can be acute (short-term), or ... > read more
Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Asthma at Wikipedia.org. See the Wikipedia copyright page for more details.
