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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.
According to Dr. Clifford Bassett, MD, allergist at NYU Langone Health based in New York City, this accumulated nasal mucus can also lead to excessive coughing, which in rare instances may induce ...
Postnasal drip coughing can be caused by the direct irritation of the postnasal drip or by inflammation of cough receptors in the upper airway. Postnasal drip cases contribute 34% of chronic cough cases. [17] Asthma that affects the upper respiratory tract. Other causes such as cold air or breathing in chemicals can also induce coughing. [18]
Also called rhinorrhea, is a very common medical disorder that occurs when the nasal tissues are congested and the excess fluid runs either at the back of the throat or out of the nose. Post-nasal drip can be caused by the common cold, allergies to dust, smoking, or pet dander. Even spicy foods can sometimes cause post-nasal drip.
“In adults over the age of 65, symptoms almost always include a cough, whereas with the flu, coughing is usually just present in about two-thirds of patients,” he says.
A cough is a sudden expulsion of air through the large breathing passages which can help clear them of fluids, irritants, foreign particles and microbes.As a protective reflex, coughing can be repetitive with the cough reflex following three phases: an inhalation, a forced exhalation against a closed glottis, and a violent release of air from the lungs following opening of the glottis, usually ...
Allergic rhinitis may cause additional symptoms, such as sneezing and nasal itching, coughing, headache, [7] fatigue, malaise, and cognitive impairment. [8] [9] The allergens may also affect the eyes, causing watery, reddened, or itchy eyes and puffiness around the eyes. [7]
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.