Chronic obstructive pulmonary disease
lung disease involving long-term poor airflow
Chronic obstructive pulmonary disease (COPD) is a long-term lung condition that makes it progressively harder to breathe. It occurs when the airways and lung tissue become damaged, leading to reduced airflow and reduced efficiency of oxygen exchange in the lungs. COPD develops gradually over time, and while it cannot currently be cured, treatments and lifestyle changes can help control symptoms and slow disease progression. Early diagnosis and prompt treatment are recommended.
The condition includes two related lung problems: chronic bronchitis and emphysema. Chronic bronchitis involves ongoing inflammation of the airways, causing excess mucus production, coughing, and chest discomfort. Emphysema involves damage to the small air sacs in the lungs, which reduces the lungs' ability to transfer oxygen into the bloodstream. Many people with COPD experience shortness of breath, persistent cough, wheezing, and reduced exercise tolerance. Symptoms can become more severe during acute flare-ups, which can be triggered by viral and bacterial infections and exposure to irritants. People with COPD generally display a combination of these symptoms, and are likely to have additional health issues.
The public source identifies “Chronic obstructive pulmonary disease” as lung disease involving long-term poor airflow. This brief keeps that definition visible, then builds a research path around Chronic, obstructive and pulmonary.
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A short description can identify a subject without explaining its stakes. For “Chronic obstructive pulmonary disease”, the useful work is to connect “lung disease involving long-term poor airflow” to the records capable of establishing context and consequence.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 18, 2026. The linked authority identifier is Q199804. None of the 0 selected statements returned an explicit reference.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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Questions for further research
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This entry incorporates text from “Chronic obstructive pulmonary disease” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.