Nonallergic rhinitis is a medical term that describes a set of symptoms that resemble an allergy but that occur without a known cause. It produces symptoms such as: Postnasal drip Runny nose S →

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ChineseNonallergic rhinitis is a medical term that describes a set of symptoms that resemble an allergy but that occur without a known cause. It produces symptoms such as: Postnasal drip Runny nose S →