Itchy nose sneezing blood clots, may be allergic rhinitis, acute rhinitis or vasomotor rhinitis and other diseases, caused by rupture of the nasal mucous membrane a small amount of bleeding accumulated in the nasal cavity, itchy nose, sneezing will be discharged with the blood clots. 1. Allergic rhinitis: rhinitis is aggravated due to exposure to certain allergens, which may cause nasal itching, nasal congestion and watery runny nose, etc. If sneezing too violently or repeatedly picking or rubbing the nose due to nasal itching leads to localized erosion of the nasal mucosa and bleeding, which may lead to the phenomenon of blood clots. 2. Acute rhinitis: acute inflammation of the nasal mucosa caused by viral infection, and the stimulation of inflammatory factors can lead to an increase in the brittleness of the nasal mucosa, so there may be an itchy nose sneezing the phenomenon of blood clots. 3. Vasomotor rhinitis: this disease is often due to autonomic nervous system dysfunction, in the physical and chemical factors stimulation, exercise or diet can often be triggered by itchy nose sneezing, nasal mucosal damage bleeding blood clots can be discharged. Itchy nose sneezing blood clots and many other causes, it is recommended to identify the cause of the disease and take corresponding therapeutic measures to avoid blindly use their own medication.