Sudden sneezing and runny nose is generally a manifestation of allergic rhinitis, which may be related to the patient’s sudden inhalation of allergens, inducing a rapid allergic reaction inside the nasal cavity, clinically, there are mainly sneezing, runny nose, itchy nose, nasal discomfort, itchy eyes, itchy throat and other related discomfort. allergies. Clinically, nasal spray hormone and antihistamine nasal spray can be applied for nasal spray treatment, while oral antihistamine and leukotriene receptor antagonist drugs are used for comprehensive symptomatic treatment, and the patient’s symptoms will improve significantly in about three days after applying the drugs.