Bloody, brown, white, yellow, or green phlegm may be a sign of an underlying condition or infection. Viral and bacterial infections, allergies, and respiratory illnesses can cause phlegm as a symptom.

Managing mucus from COPD involves strategies that can help loosen mucus and clear it from your airway, such as staying hydrated, exercising, and quitting smoking. Specific breathing techniques, ...

Please provide your email address to receive an email when new articles are posted on . Researchers used the COPDGene cohort to develop the tool and the ECLIPSE cohort to test it. GOLD grade, BMI and ...