
When the large air passages which carry air from the windpipe to lungs become inflamed the result is bronchitis.
It is usually easy to control and heals completely with full return of function provided proper medicine and early treatment is given.

Causes
- Smoking is one of the most important causes.
- Allergy, such as air pollutants.
- Infection due to bacteria, virus.
- Occupation such as coal miners, grain handlers, metal moulders & people working with dust.
- Pre-existing diseases such as pneumonia, emphysema.