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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.
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.
Along with congestion, doctors said, some patients experience a headache, fatigue, muscle aches, fever, chills or post-nasal drip that may lead to a cough — though coughing isn't a primary symptom.
Nasal polyps are noncancerous growths within the nose or sinuses. [1] Symptoms include trouble breathing through the nose, loss of smell, decreased taste, post nasal drip, and a runny nose. [1] The growths are sac-like, movable, and nontender, though face pain may occasionally occur. [1] They typically occur in both nostrils in those who are ...
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]
Rhinorrhea is characterized by an excess amount of mucus produced by the mucous membranes that line the nasal cavities. The membranes create mucus faster than it can be processed, causing a backup of mucus in the nasal cavities. As the cavity fills up, it blocks off the air passageway, causing difficulty breathing through the nose.
Episodes can be triggered suddenly or develop gradually and triggers are numerous. Primary causes are believed to be gastroesophageal reflux disease (GERD), extra-esophageal reflux (EERD), exposure to inhaled allergens, post-nasal drip, exercise, or neurological conditions that can cause difficulty inhaling only during waking. [11]
Nasal itching and paroxysmal sneezing are usually associated with nonallergic rhinitis rather than allergic rhinitis. [ 4 ] [ 5 ] Other symptoms that are more specific to non-allergic rhinitis include ear plugging or discomfort with eustachian tube dysfunction , headaches, sinus pressure, and muffled hearing.
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