When coughing, lung rales can be heard, most often in response to inflammation of the lungs. For example, a cough may be heard accompanied by dry rales with relatively coarse breath sounds that diminish or even disappear as the cough progresses, commonly in bronchitis. A cough with fixed wet rales that do not diminish or disappear with coughing is commonly associated with a lung infection, such as bacterial pneumonia. In this case, blood tests and X-rays or CT of both lungs can be taken to clarify the diagnosis. Symptomatic and etiologic treatment should be chosen, such as taking cough suppressant and phlegmolytic drugs to promote the expulsion of phlegm from the airways, reduce the rales, and anti-inflammatory treatment. For bacterial infections, antibiotics can be chosen.