Q. For the past year I have had a persistent nasal drip problem. It happens day and night and forces me to clear my throat by forcibly coughing. What can I do?
A. Daily persistent nasal drip or congestion is almost always caused by chronic nonallergic rhinitis (NAR). In contrast, allergic rhinitis most often causes intermittent nasal symptoms, only when exposed to certain allergens.
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About the Author
Howard E. LeWine, MD, Chief Medical Editor, Harvard Health Publishing
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