Post-nasal drip, also called upper airway cough syndrome (UACS), is a common disorder. It can be caused by colds, allergies, gastroesophageal reflux disease (GERD), and other conditions. It occurs ...
A decongestant is a medication that clears up congestion, meaning a stuffy head or nose. Congestion is caused by enlarged blood vessels in your nasal and airway membranes, which make it hard to ...
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