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Mucus is a normal protective layering around the airway, eye, nasal turbinate, and urogenital tract. Mucus is an adhesive viscoelastic gel produced in the airway by submucosal glands and goblet cells and is principally water. It also contains high-molecular weight mucous glycoproteins that form linear polymers.
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]
The word "catarrh" comes from 15th-century French catarrhe, Latin catarrhus, and Greek Ancient Greek: καταρρεῖν [5] (katarrhein): kata-meaning "down" and rhein meaning "to flow." The Oxford English Dictionary quotes Thomas Bowes' translation of Pierre de la Primaudaye's The [second part of the] French academic (1594): "Sodainely ...
"You can have bright yellow, dark green mucus, even with viruses." Pink or red. This typically means there's blood in your mucus, Elliott says, "usually because the nasal passages are too dry and ...
If you experience difficulty breathing, develop a severe cough, notice thick green or yellow mucus, run a fever, and/or feel extremely fatigued If your symptoms worsen instead of improve over time
Mucus isn't exactly something people give much thought to — until they're sick and dealing with a constantly runny nose. But mucus is actually an important part of a healthy immune system ...
In general, nasal mucus is clear and thin, serving to filter air during inhalation. During times of infection, mucus can change color to yellow or green either as a result of trapped bacteria [24] or due to the body's reaction to viral infection. For example, Staphylococcus aureus infection may turn the mucus yellow. [25]
The color of your mucus can reveal some surprising things about your health. Here's what your mucus color means, according to experts.