Phlegm is mucous gel-like substance expectorated from the upper and lower respiratory tract organs that usually accompanies viral and bacterial inflammatory processes. The color of phlegm could be a major clue in determining a correct diagnosis for your doctor. Clear mucus is usually not an alarming sign and could simply signal mild irritation due to allergies or eating spicy foods. On the other hand, coughing up green phlegm and excessive mucus secreted from the nasal passages is a more serious sign of an acute respiratory inflammation like sinus infection of pneumonia and should be evaluated by your doctor.
Let us shed some light on the most common causes for coughing up yellow mucus:
1. Acute viral or bacterial bronchitis will force you coughing up yellow mucus, which is a definite sign of inflammation, which could also be accompanied by sore throat, excessive cough and fever. There are number of bronchitis natural remedies you may try that help to deal with mucus problems as well.
2. Bacterial and viral pneumonia will give you more frothy yellow phlegm and excessive throat mucus; it is a very serious condition that should not be taken lightly.
3. Coughing up yellow mucus could be a sign of chronic bronchitis caused by smoking or hazardous work environment like coal mines or chemical factories. In this case the phlegm is especially thick and hard to cough up and might even restrict oxygen to lungs and cause characteristic blue lips.
4. Tuberculosis is another reason for you to be coughing up yellow mucus that might also contain traces of blood, fever and a general feeling of listlessness. Tuberculosis requires a very serious treatment and observation for the rest of your life to prevent the recurring of the acute phase.
5. Lung cancer is the most dangerous reason for coughing up yellow mucus, especially if accompanied by low appetite and weigh loss, and should be evaluated by a health professional immediately for early detection and treatment.
If you continue coughing up yellow mucus for more that two weeks and you see no signs of improvement, see a doctor to rule out a dangerous health complication.