What is bronchitis?

Answer 1

Bronchitis is an inflammation of the air passages between the nose and the lungs, including the windpipe or trachea and the larger air tubes of the lung that bring air in from the trachea (bronchi). Bronchitis can either be of brief duration (acute) or have a long course (chronic). Acute bronchitis is usually caused by a viral infection, but can also be caused by a bacterial infection and can heal without complications. Chronic bronchitis is a sign of serious lung disease that may be slowed but cannot be cured.

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A sickness with coughing. I had it once and I hope you are talking about the sickness instead of something else. You should ask a doctor really.
Bronchitis is an inflamation of the bronchus and broncreoles. It makes the victim cough very hard all throughout the day. It can last anywhere from a few weeks to several months.