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You should also seek medical attention if you have persistent colored mucus and symptoms for more than a week, Druckman adds. Some other warning signs are: Dark-colored mucus
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]
Mucus has trillions of microbes and is a first line of defense against microorganisms that cause infections, the NIH says. "Mucus is very helpful in terms of our immune system," Elliott says.
Phlegm can exist in different colors. The color could provide important clues about a person's health. [1] Yellow or green: Indicates an infection often by a virus or bacteria. The color is caused by an enzyme produced by the white blood cells combating the infection. Clear: Indicates allergies. Mucous membranes produce histamines and make more ...
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Here's what your mucus color means, according to experts. ... If it doesn't clear up after 10-12 days, you have severe symptoms, or a fever above 101.5 degrees, Nasseri suggests consulting your ...
This mucus production is activated by the autonomic nervous system; specifically, cholinergic neuropeptides are responsible for increasing mucus production. [7] Excess mucus can drain posteriorly into the upper and lower airways, which, along with other physical and chemical irritants, can activate receptors in the respiratory tract that ...
Over the next several days, the mucus color may change to white, yellow or green. Although this can feel like you are getting worse, the change in color is a natural course of the illness.