This results in the familiar symptoms of runny nose, congestion, and coughing up phlegm. Respiratory infections, including COVID-19, are a common cause of inflammation resulting in a productive cough.
Coughing up white mucus can mean you have congestion with a respiratory infection such as bronchitis, or it can be a symptom of long-term health issues like chronic obstructive pulmonary disease ...
Symptoms of this condition include a nagging cough, and you might cough up mucus that’s yellow or green ... If your symptoms last longer than 3 months, you may have a chronic case.