Nonallergic response to cigarette smoke or
other inhaled toxins
nonallergic responses to substances that are not usually harmful to people
Inflammation and damage to airways in the
lung and lung tissue
Lung function cannot be completely reversed,
even with treatment
Usually no or little improvement with
Variable inflammation of the lungs'
Often have large improvement with short-acting
Some lung function is reversible with treatment
Chronic symptoms that get worse over
Intermittent or persistent
Acute episodes often occur
In this article
This information is produced and provided by the National
Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National
Institute via the Internet web site at http://
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WebMD Medical Reference from Healthwise
March 12, 2014
This information is not intended to replace the advice of a doctor.
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