Mometasone furoate nasal spray belongs to the glucocorticoid agent, commonly used in the treatment of allergic rhinitis, children can usually be used for 2-4 weeks. Mometasone furoate belongs to the nasal spray hormone, can act directly on the lesion, reduce the inflammatory response, usually used for about 2-4 weeks, mometasone furoate treatment of allergic rhinitis, the time should not be too short or too long, if the time is too short easily lead to the recurrence of symptoms or poor control of the symptoms, the time is too long, it is easy to lead to the nasal mucosal dryness and bleeding, nasal dryness, nose, itchy and other discomfort. In addition, mometasone furoate nasal spray may cause headache, pharyngitis, burning sensation in the nose, nasal ulcers and other adverse reactions, allergy is prohibited. If allergic rhinitis is recommended to go to the hospital, you need to use the drug under the guidance of the doctor for treatment.