What Causes Phlegm To Build Up In Your Lungs

The cough is often worse at night. Coughing does not damage the lungs. In addition, a child may have a raised temperature (fever), a sore throat, headache, and tiredness; they may be off their food. Sometimes children may be sick (vomit) after a bout of coughing. A build-up of mucus behind the eardrums may cause dulled hearing or mild earache.

The phlegm will continue to build up and absorb chemicals and debris, eventually forming a sort of tar on the inside of the lungs. This results in the narrowing of the lung’s airways and results in wheezing, heavy, or rapid breathing as your body tries to get adequate air through a smaller passage. Pleurisy is a type of chest pain that affects tissues around your lungs. Learn more about pleurisy causes, symptoms, diagnosis, treatment, and complications.