The phlegm is brown because of blood and the intense chronic inflammation that comes with the chronic disease state. The bacteria camp out inside the lungs and cause very gradual changes in the consistency and appearance of phlegm. If you have chronic lung disease, you may be used to seeing brown phlegm.

What color phlegm is bad?

Red or pink phlegm can be a more serious warning sign. Red or pink indicates that there is bleeding in the respiratory tract or lungs. Heavy coughing can cause bleeding by breaking the blood vessels in the lungs, leading to red phlegm. However, more serious conditions can also cause red or pink phlegm.

What Colour is phlegm with a chest infection?

The main symptoms of a chest infection can include: a persistent cough. coughing up yellow or green phlegm (thick mucus), or coughing up blood. breathlessness or rapid and shallow breathing.