What Is Bronchitis? What Causes Bronchitis?

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Source: www.medicalnewstoday.com/articles/8888.php


what is bronchitis


Bronchitis - Wikipedia, the free encyclopedia

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** Bronchitis **

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Not to be confused with bronchiolitis.

Bronchitis
/Classification and external resources/

This diagram shows acute bronchitis.
ICD-10 J20-J21, J42
ICD-9 466, 491, 490
DiseasesDB 29135
MedlinePlus 001087
eMedicine article/807035 article/297108
MeSH D001991

*Bronchitis* is an inflammation of the mucous membranes of the bronchi (the
larger and medium-sized airways that carry airflow from the trachea into
the more distal parts of the lung parenchyma).^[1]^[2]^[3] Bronchitis can
be divided into two categories: acute and chronic.^[1]^[2]^[3]^[4]

Acute bronchitis is characterized by the development of a cough or small
sensation in the back of the throat, with or without the production of
sputum (mucus that is expectorated, or "coughed up", from the respiratory
tract). Acute bronchitis often occurs during the course of an acute viral
illness such as the common cold or influenza. Viruses cause about 90% of
acute bronchitis cases, whereas bacteria account for about 10%.^[5]^[6]

Chronic bronchitis, a type of Chronic obstructive pulmonary disorder, is
characterized by the presence of a productive cough that lasts for three
months or more per year for at least two years. Chronic bronchitis usually
develops due to recurrent injury to the airways caused by inhaled
irritants. Cigarette smoking is the most common cause, followed by exposure
to air pollutants such as sulfur dioxide or nitrogen dioxide,^[7] and
occupational exposure to respiratory irritants.^[6]^[8] Individuals exposed
to cigarette smoke, chemical lung irritants, or who are immunocompromised
have an increased risk of developing bronchitis.^[9]

*Contents*

· 1 Acute bronchitis
· 2 Chronic bronchitis
· 3 References
· 4 External links

*Acute bronchitis[edit]*

Main article: Acute bronchitis

Acute bronchitis is a self-limited infection of the lower respiratory tract
causing inflammation of the bronchi. Acute bronchitis


Source: en.wikipedia.org/wiki/Bronchitis

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