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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.
Other causes can be allergy, cold, flu, and side effects from medications. However, some researchers argue that the flow of mucus down the back of the throat from the nasal cavity is a normal physiologic process that occurs in all healthy individuals. [1]
Post-nasal drip is what happens when excess mucus accumulates in the back of the throat or nose, according to Gavin Le Nobel, M.D., head and neck surgeon, and otolaryngology (ENT) with Houston ...
Catarrh (/ k ə ˈ t ɑːr / kə-TAR) is an inflammation of mucous membranes in one of the airways or cavities of the body, [1] [2] usually with reference to the throat and paranasal sinuses. It can result in a thick exudate of mucus and white blood cells caused by the swelling of the mucous membranes in the head in response to an
These are some of the major causes of an acute cough, according to doctors: Allergens like pet dander, mold, or pollen An upper respiratory infection like the common cold, the flu, or COVID-19
The reason why COVID causes a sore throat is because it’s an upper respiratory viral infection. This means it affects the upper airways, causing them to become irritated, which can then lead to ...