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Along with a runny nose and sore throat, green phlegm is another cold-like symptom of COVID-19. Interestingly, the color of the mucus is an important indicator when it comes to infection.
Also known as phlegm, mucus is made up of mostly water, but it also contains "remnants of skin-lining cells (epithelial cells), antimicrobial enzymes, proteins and inorganic salts," explains Nasseri.
Phlegm (/ ˈ f l ɛ m /; Ancient Greek: φλέγμα, phlégma, "inflammation", "humour caused by heat") is mucus produced by the respiratory system, excluding that produced by the throat nasal passages. It often refers to respiratory mucus expelled by coughing, otherwise known as sputum.
Having green, yellow, or thickened phlegm (sputum) does not always indicate the presence of an infection. Also, if an infection is present, the color of the phlegm (sputum) does not determine whether a virus, a bacterium or another pathogen has caused it. Simple allergies can also cause changes in the color of the mucus. [1]
“A productive cough is a cough that produces phlegm,” Dr. Youssef says. ... or you’re coughing up blood, Dr. Ascher says it’s important to contact a doctor no matter how long it’s been ...
The dead tissue forms a thick, gray coating that can build up in the throat or nose. This thick gray coating is called a "pseudomembrane." It can cover tissues in the nose, tonsils, voice box, and throat, making it very hard to breathe and swallow. [11] Symptoms can also include cardiac arrhythmias, myocarditis, and cranial and peripheral nerve ...
“Sometimes people who have really significant chronic lung disease can cough up a brownish phlegm,” says Parsons. “Really dark brown, tenacious phlegm is seen in patients who have cystic ...
Post-nasal drip (PND), also known as upper airway cough syndrome (UACS), occurs when excessive mucus is produced by the nasal mucosa. The excess mucus accumulates in the back of the nose , and eventually in the throat once it drips down the back of the throat.
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