Allergic rhinitis can not be detected allergens, and is also relatively common in clinical practice, often its main clinical symptoms are runny nose, nasal congestion, nasal itching, accompanied by sneezing and other clinical symptoms, at this time, as long as the symptomatic treatment can be. You can take oral anti-allergy drug Cetirizine Hydrochloride, and at the same time, you can use the nose spraying drug Cozulan or Renocort, and you can add the rhinitis drug Rhinitis Nimbo Capsules or Nasal Abyssal Oral Solution. If the improvement of its symptoms is not very obvious, you can also add immunomodulators such as BCG polysaccharide injection, in the diet pay attention not to eat spicy and stimulating food.