Itchy nose always want to sneeze, commonly due to allergic rhinitis, vasomotor rhinitis and nasal vestibulitis, it is recommended to consult a doctor in time. 1. Allergic rhinitis: This disease is a type I allergic reaction, which is caused by allergens stimulating the nasal mucosa causing allergic reactions in the nasal cavity, such as itching, sneezing, watery nasal discharge and nasal congestion. Patients are likely to be allergic to certain substances, such as dust mites, pollen, willow floss, and will keep itching and sneezing after contact. 2. Vasomotor rhinitis: the symptoms of this disease are similar to those of allergic rhinitis, which are characterized by sudden onset of nasal itching, continuous sneezing, running watery nose, nasal congestion, etc.; the onset of this disease is sudden and disappears quickly. 3. Nasal vestibulitis: Chronic inflammatory reaction of the nasal vestibular skin may cause itching and sneezing. This symptom alone is not enough to diagnose the disease, and may be caused by other factors. It is recommended that the patient should consult a doctor in time for a systematic examination to clarify the cause of the disease and give targeted treatment.