Long-term dryness, blood and crusting of the nose may be caused by dry rhinitis, atrophic rhinitis, nasal vestibulitis and other factors. 1. Dry rhinitis: the capillaries on the nasal mucosa are very rich, and if it is often in a dry environment, it may produce chronic inflammation, which is easy to cause bleeding, nasal dryness, nasal congestion, intranasal vesiculation, crusting and other symptoms. 2. Atrophic rhinitis: if the nasal mucosa undergoes progressive atrophic lesions, symptoms such as dryness of the nasal cavity and throat, frequent crusting and bleeding in the nasal cavity, headache and dizziness may occur. 3. Nasal vestibulitis: If inflammatory reaction occurs in the nasal vestibule area, it may lead to redness, swelling, pain and itching, dryness, vesicles, scabs and other symptoms in the nasal vestibule. If the nose is dry for a long time with blood and scabs, there are other possibilities. It is recommended to consult a doctor in time to clearly diagnose the cause of the disease before further treatment, so as not to delay the condition.