Reference Article

from Wikipedia, the free encyclopedia


Chronic obstructive pulmonary disease (COPD) is an umbrella term for a group of respiratory tract diseases that are characterized by airflow obstruction or limitation.

The most common cause is tobacco smoking, but COPD can also be caused by exposure to other airway irritants like coal dust or solvents.

In some cases there are no known causes (idiopathic COPD) or the disease may arise due to congenital defects.

COPD is a progressive disease.

Obstructive changes in spirometry and decreases in diffusion capacity are typically seen before symptoms occur.

Early signs and symptoms are shortness of breath on exertion, recurrent respiratory infections or a morning cough.

Note: This article excerpts material from the Wikipedia article "COPD", which is released under the GNU Free Documentation License.

See the following related content on ScienceDaily:

Related Stories

Share This

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.


Breaking News:
from the past week

In Other News

... from

Science News

Health News

Environment News

Technology News


Free Subscriptions

Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile

Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?

Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins