Acute bronchitis isinflammation of the main airways to the lungs called the bronchi. It is usually caused by an infection. Symptomsof acute bronchitis may last several weeks.
See also chronic bronchitis .
Bronchitis - acute
Causes, incidence, and risk factors
Acute bronchitis is one of the most common medical conditions seen in a doctor's office. Itisprimarily caused by avirus that infects the respiratory system.There are anumber of different respiratory viruses that can do this, including the rhinovirus, which causes the common cold.
The classic symptoms of bronchitis may mimic a cold. A tickle in the back of the throat progresses into a dry, irritating cough. But as the infection gets worse, a person may cough up thick, yellow mucus thatmay (rarely)be streaked with blood.
Sometimes the symptoms of bronchitisdo not appear until the underlying viral infection has gone away, and a secondary bacteria infection causes ...
Chronic bronchitis is a lung disease that causes a cough with increased mucus production for at least three months in two consecutive years. It generally falls under the category of chronic obstructive pulmonary disease, or COPD.
The most common cause is cigarette smoking, although the inhalation of irritants at work, air pollution and lung infections may also cause it. Considering most people develop this disease due to exposure to cigarette smoke, one might wonder: Why does smoking cause chronic bronchitis?
To best answer this question it’s helpful to understand the basics of airway anatomy, which is covered in the pithy post “ Your Journey Down the Respiratory Tract .” Knowledge of lung anatomy is helpful because long-term exposure to inhaled cigarette smoke may cause changes inside the airways. These changes may include:
1. Bronchial mucous glands become bigger : This causes increased mucus or secretion production...
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