https://www.medicalnewstoday.com/articles/318359.php

Jul 13, 2017 ... White blood cells are the cells of the immune system that are responsible for ... Frothy sputum is mucus that is foamy and contains bubbles.

https://www.healthline.com/health/coughing-up-white-mucus

Aug 30, 2018 ... Also discover the difference between clear, white, yellow, and green ... If you're coughing up frothy sputum, review this and other symptoms with ...

https://mylungsmylife.org/topics/group-1/symptoms-of-copd/symptoms-1/

Along with a cough there can be increase in the amount of spit or phlegm. The colour of your spit or phlegm may change from frothy and white to slightly yellow  ...

https://www.mayoclinic.org/diseases-conditions/pulmonary-edema/symptoms-causes/syc-20377009

Aug 8, 2018 ... ... A cough that produces frothy sputum that may be tinged with blood .... your lungs suddenly fill with fluid and inflammatory white blood cells.

https://www.merckmanuals.com/home/lung-and-airway-disorders/acute-bronchitis/acute-bronchitis

Symptoms of acute bronchitis usually last days to a few weeks. However, bronchitis that lasts up to 90 days is still usually classified as acute bronchitis.

https://en.wikipedia.org/wiki/Sputum

Sputum is mucus and is the name used for the coughed-up material (phlegm) from the lower ... Foamy white – may come from earlier-phase pulmonary edema.

https://www.belmarrahealth.com/white-mucus-causes-treatment-and-home-remedies/

Jun 17, 2016 ... The not-so-polite call it phlegm, and there are a few who settle for snot. .... Frothy mucus: Coughing up white phlegm with bubbles might be a ...

https://www.livestrong.com/article/161613-reasons-for-coughing-up-white-mucus/

Mar 13, 2018 ... Mucus is a vital substance that coats the mucous membranes in the body, ... If you are coughing up white, frothy mucus and have shortness of ...

https://www.verywellhealth.com/what-is-sputum-2249192

May 8, 2019 ... What is sputum and what do the different colors mean (such as white, yellow, green, pink, and bloody)?

https://www.chss.org.uk/heart-information-and-support/about-your-heart-condition/common-heart-conditions/heart-failure/heart-failure-symptoms/

Having a cough with a lot of white frothy sputum can also cause shortness of breath, caused by the lungs becoming congested with fluid. You must let your ...