If a patient has allergic rhinitis, the mucous membrane of the nasal cavity will be highly edematous, and then the nose will run like crazy, that is, like watery nasal mucus constantly, and often need to blow the nose hard to feel more comfortable. But after a short time, there will be a large amount of nasal mucosa again, so it is recommended that patients apply antihistamine drugs to treat the symptoms. Clinically, paracetamol or nasal spray of azelastine hydrochloride are commonly used, which have good efficacy in clinical practice. Normal active treatment for about 3 days should improve the patient’s condition, if the symptoms persist, you can consider adding hormones to reduce swelling, commonly used hormone is methylprednisolone tablets, patients can also consider intramuscular injection of dexamethasone injection in the clinical have very good efficacy. And for patients with allergic rhinitis, they must pay attention to more exercise to avoid repeated attacks.