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.
What Is Nasal Congestion and Sinus Pressure? It's one of life's miseries: Your nose is stuffed and your face aches. You might feel pressure around your nose, eyes, forehead, and maybe even your scalp.