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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]
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
“A productive cough is a cough that produces phlegm,” Dr. Youssef says. But a non-productive cough is more dry, says John M. Coleman III, ... or you’re coughing up blood, Dr. Ascher says it ...
Clear mucus after white, yellow or green mucus. ... For coughs, consider throat lozenges or cough drops for anyone over the age of 4. Honey can also help for anyone at least 1 year old.
Phlegm is more related to disease than mucus, and can be troublesome for the individual to excrete from the body. Phlegm is a thick secretion in the airway during disease and inflammation. Phlegm usually contains mucus with virus, bacteria, other debris, and sloughed-off inflammatory cells.
Other common symptoms include coughing up blood (classically seen as pink or red, frothy sputum), excessive sweating, anxiety, and pale skin. Other signs include end-inspiratory crackles (crackling sounds heard at the end of a deep breath) on auscultation and the presence of a third heart sound .
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.
A dry cough is a persistent cough where no mucus is present; this can be a sign of an infection. A chronic wet cough is a cough where excess mucus is present; depending on the colour of the phlegm, bacterial infections may be present. [16] A stress cough is when the airways of the throat are blocked to the point that it causes a reflexive spasm.