During the first few days of illness, it can be difficult to distinguish the signs and symptoms of acute bronchitis from those of a common cold. During the physical exam, your doctor will use a stethoscope to listen closely to your lungs as you breathe.
In some cases, your doctor may suggest the following tests:

A spirometer is a diagnostic device that measures the amount of air you can breathe in and out and the time it takes you to breathe out completely after you take a deep breath.
Most cases of acute bronchitis get better without treatment, usually within a couple of weeks.
In some circumstances, your doctor may recommend other medications, including:
If you have chronic bronchitis, you may benefit from:
If you have bronchitis, to help you feel better, you may want to try the following self-care measures:
You're likely to start by seeing your family doctor. If you have chronic bronchitis, you may be referred to a doctor who specializes in lung diseases (pulmonologist).
Before your appointment, make a list of answers to the following questions:
If possible, bring a family member or friend to your appointment. Sometimes it can be difficult to remember all the information provided. Someone who accompanies you may remember something that you missed or forgot.
If you've ever seen another physician for your cough, tell your present doctor what tests were done. If possible, bring the reports with you, including results of a chest X-ray, sputum culture and pulmonary function test.
Your healthcare professional is likely to ask you several questions, such as: