The nose is always itchy and sneezing clinically common diseases are as follows:, First, allergic rhinitis, clinically the most common disease, is divided into perennial and seasonal. Most of them are induced by dust mites, pollen, animal fur, animal feces, etc. Patients present with rapid nasal allergic reactions, which are clinically associated with itchy nose, sneezing and clear nasal discharge. Clinical treatment with nasal spray hormones and anti-allergy drugs can significantly relieve the symptoms. Secondly, vasomotor rhinitis, which may also be caused by temperature and other induced changes, resulting in sneezing and clear nasal discharge. Clinically, through blood sampling for allergens, no allergens can be found, and the total IgE level is not elevated, but the patient’s symptoms are very similar to those of allergic rhinitis, and the clinical application of nasal spray hormone therapy also provides relief.