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Post-nasal drip (PND), also known as upper airway cough syndrome (UACS), occurs when excessive mucus is produced by the nasal mucosa. The excess mucus accumulates in the back of the nose , and eventually in the throat once it drips down the back of the throat.
[2] [1] The most common symptom is a cough. [1] Other symptoms include coughing up mucus, wheezing, shortness of breath, fever, and chest discomfort. [2] The infection may last from a few to ten days. [2] The cough may persist for several weeks afterward with the total duration of symptoms usually around three weeks.
Excess mucus can narrow the airways, thereby limiting airflow and accelerating the decline in lung function, and result in COPD. [35] [40] Excess mucus shows itself as a chronic productive cough and its severity and volume of sputum can fluctuate in periods of acute exacerbations. [35]
The phlegm produced by catarrh may either discharge or cause a blockage that may become chronic. An 1896 ad for Elys Cream Balm, a catarrh remedy The word "catarrh" was widely used in medicine since before the era of medical science, which explains why it has various senses and in older texts may be synonymous with, or vaguely indistinguishable ...
Symptoms of URTIs commonly include cough, sore throat, runny nose, nasal congestion, headache, low-grade fever, facial pressure, and sneezing. [9] Symptoms of rhinovirus in children usually begin 1–3 days after exposure. The illness usually lasts 7–10 more days. [6]
At the end of the experiment, experimenters found that there was a high correlation between phlegm and cough with smoking of 0.49 (p < 0.001.) [citation needed] Illness : During illness like the flu , cold , and pneumonia , phlegm becomes more excessive as an attempt to get rid of the bacteria or viral particles within the body.
Along with a runny nose and sore throat, green phlegm is another cold-like symptom of COVID-19. Interestingly, the color of the mucus is an important indicator when it comes to infection.
A postinfectious cough is a lingering cough that follows a respiratory tract infection, such as a common cold or flu and lasting up to eight weeks. Postinfectious cough is a clinically recognized condition represented within the medical literature.