Postnasal Drip
Another common cause of chronic coughing is postnasal drip. This condition can affect nearly everyone at some point in life. In general, the glands in the throat and nose produce mucus continually to filter out foreign elements, keep nasal membranes moist, and fight infection. However, when the body produces extra mucus, it might build up on the back of the throat. This makes you feel like it is dripping down the throat from the nose. In addition to coughing, other typical symptoms include bad breath, scratchy or sore throat, or nausea. [3]
